On Sunday afternoon, when Mary contacted Matthew using the dating app to confirm the date for the following Friday, Matthew called through the app.

"Listen, Molly, I've been thinking about proposing something that might be exciting to do this week," Matthew's voice came through the laptop's speakers.

"Yes, tell me, Matt," Mary replied.

"I've been thinking about the cock cage and the tease and denial game you and Buck play; from the effect it has on both of you, it seems to be very erotic and exciting. I thought that, since you and I don't see each other during the week, maybe we could do daily video sessions or just voice calls where we talk about fantasies and masturbate, but without orgasm. That way, we have fun during the week, and on Friday, we'll have a crazy desire to fuck."

"Well, maybe we could try it," Mary said, and then, activating the mute on the laptop, she asked, "What do you think?"

"If it's OK with you, it's OK with me," I replied. "Besides, you'll see what it's like to be teased for a whole week and not be able to cum," I added with a mischievous grin.

Mary reactivated the microphone and replied to Matt, "Okay."

"Perfect. But remember, no orgasms from you or me," Matthew said.

"You know Buck has the cock cage."

"Yeah, but he still has a mouth and hands. And you have hands, a vibrator, and other toys from what you said."

"All right. Don't worry about it."

"It will be a 'gentlemen's agreement'. If it's not kept, there'll be a penalty or a bonus for the one who complies. Agreed?"

"Promise. When do you want to start?"

"How about right now?"

"Why not" Mary replied with a smile.

"I'm going to get undressed and get comfortable in bed."

"Me too."

"Are you going to use a vibrator?"

"Yes."

"Let me know when you're ready."

Mary undressed, took the vibrator (which she christened 'Ray' the first time she did a strip tease in front of me) and the lube, and lay back on the pillow, with the computer in front of her on the bed, between her legs. I lay down next to her, admiring her body and her excited face at the new game.

I started to fondle her breasts, but she gave me a playful slap on the hand and said with a smirk, "No touching. You are not invited to this game," and stuck out her tongue provocatively.

Whether I was invited or not, I was certainly sure that lying next to Mary and watching her engage in erotic play was going to be a huge turn-on for me.

"I'm ready now, Matt," said Mary.

"Me too," Matthew replied. And he continued, "Molly, fondle both breasts with your hands and imagine they are my hands."

Mary brought her hands to her breasts and began to grope them, closing her eyes to become more immersed in the game and allowing herself to be carried away by Matthew's voice.

"I love your breasts, Molly. I can't wait until Friday to stroke them, but in the meantime, I imagine I'm touching them."

"I imagine you touching them, Matt. I like you fondling and kneading my breasts."

"Now pinch your nipples hard and don't let go until I tell you."

Mary pinched her nipples and let out a slight moan.

"Pull them out, away from you, and imagine they are my hands," Matthew added.

"Yes, I think of your strong hands grabbing my breasts and pulling on my nipples."

"I can almost feel them from here; they sure are hard, aren't they?"

"Yes."

"Now leave one hand on your breasts and continue to caress them, and with the other, caress your clit. I have one hand around my cock, and I'm masturbating, imagining you naked in front of me, waiting for me."

Mary began to caress her clitoris with the fingers of her right hand, making soft circles and occasionally sliding her fingers along the lips of her sex. I could tell by her breathing and panting that she was getting more and more aroused.

After several minutes, Matthew said, "Molly, let me know when you feel your pussy getting wet."

She didn't need to check to know it was, so she replied, "I already am."

"I can imagine how delicious your pussy will be now, all wet and hot. All the times I've penetrated you with my cock, as I've gone inside you, I've thought it was wonderful. Imagine when I put my cock in you again this Saturday. Tell me what it feels like when I put it in you."

"I like you fucking me. I like to feel your cock entering my body, opening up my sex, and parting the walls of my vagina."

"Would you like to feel a cock inside you now?"

"Humm, yes, I need it."

"Then take the vibrator and put the tip in. Just the tip."

"Humm, that's it."

"Keep stroking your clitoris with one hand and, with the other, push the vibrator a little more inside you, just a little. I've got my hand on my cock, and I'm imagining it's your pussy, and I'm going inside you little by little."

"I'm going to put it in more."

"No, not until I tell you to. Keep stroking your clit and you can pull out and put the vibrator in, but just a little, just as deep as it is now."

For a while, Mary continued, and only her and Matthew's gasps could be heard through the speakers.

After a while, Matthew continued, "Now you can put it in a little more, just a little more."

"Please, I need it all the way in..."

"So ask me, and think of it as my cock; talk about it like I'm there and the vibrator is my cock."

"Stick it in me, Matt; shove your cock all the way in."

"Just a little more. Don't be impatient."

"I need to feel a cock inside me; put it all the way in; fuck me, Matt."

"Okay, put it all the way in and leave it there, but remember, you can't cum."

Mary slammed the vibrator all the way in, and I'm sure she would have cum, but she bit her lip, pinched a nipple fiercely, and managed to hold back.

Next to her, watching her enjoy herself, her beautiful body on the verge of orgasm and exuding sexuality, I was getting more excited by the minute. My cock seemed to have thoughts of its own and was desperately trying to get erect, fighting a losing battle against the hardness of the cock cage. My testicles ached from the force with which the attempted erection was pulling at the ring behind them that held the cock cage in place.

I looked all over her body with longing, wanting to replace the vibrator with my cock, desparing that I would have to wait until Friday night. And not only that, I would have to wait for Matthew to fuck her first, to stick his cock in that desirable pussy, probably several times, to get my chance to penetrate Mary's pussy and finally cum.

Matthew continued, "You can fully insert and slowly pull the vibrator in and out of your pussy. Imagine it's my cock, and tell me what you feel. And remember, no coming. Let me know when you're ready. I'm imagining I'm inside you. My cock is fully erect and hard as a rock."

Mary, in a hoarse, breathy, excited voice, replied, "I feel your hard cock deep inside me. I like it when your cock enters me, when it cums, and when I feel your hot cum mixing with the fluids in my pussy. I don't think I can take any more. I'm about to cum."

"Wait, wait a little longer. Keep taking that cock in and out like it's my own. Slowly. Feel every inch that goes inside you. I'm about to cum too; I imagine my hand is your pussy, and the lubricant is your fluids, oozing out of your channel."

Mary kept pumping the vibrator in and out very slowly, with the pace set by Matthew, until she couldn't take it anymore and said, "I need to come, Matt, please. I want you to speed up and push your thick cock all the way in.... I'm going to come... I'm going to come... Yes... Yes..."

"Stop, Molly! Cut it out! Take your hands and the vibrator away!" shouted Matthew firmly. "You can't cum. I've already let go of my cock."

"Urgg... Urgg... Urgg..." said Mary in a breathless voice. "I was just about to."

"Tomorrow we'll reconnect in the evening. And on Friday, we can release all the desire we're building up. Think about that. And remember, no orgasms. Goodbye," Matthew said goodbye.

"'Till tomorrow."

Although I had not actively participated in their game, I was as excited as they were and felt my testicles 'boiling', wanting to expel the semen that accumulated in them, and my cock as hard as the metal of the cock cage that subjected it to reduced dimensions and a very painful downward curvature.

Mary looked at me and said in a broken voice, "I can't wait to cum. I don't know how you can resist."

"I have no choice. Either you have my cock cage on or I'm tied up when you jerk me off and tease me," I replied.

"Speaking of which," I continued, "are you going to take it off and tease me this week?" Am I going to lick your pussy at night like every other week?"

"Neither, I'm afraid. I can't cum, and as soon as you touched me with your tongue, I'd burst into a giant orgasm. And as for provoking you, I think that if I touched your cock or, simply, if I saw it erect, I wouldn't resist for a second, and I'd fuck you desperately. But well, this way I'll provoke you less, and you won't have such a hard time, will you?"

I thought I was already getting really turned on watching Mary masturbate during the call with Matthew, and besides, instead of when I was being teased by her, which wasn't every day, this I would have to endure every day, so even if I didn't have to resist the edging, this would be almost worse.

And on top of that, I wouldn't have the release of watching Mary cum with my tongue. Even though I didn't orgasm when I licked her every day until she came, somehow watching her explode and releasing the sexual tension she was building up released some of mine as well. I would end up very aroused, but her orgasm would somehow 'transfer' to me and reduce my arousal slightly.

With the only sessions of the two of them, this week would be very, very hard for me to resist.

That night, as we went to bed and I spooned Mary in my arms, she took my hand in her hand and ran it all over her body, as if toying with it. I didn't know if it was to excite her more or to somehow calm her desire, but it certainly made me very excited when she guided my hand with hers all over her body, caressing her hips and her belly, running it over her breasts, where I could feel her hard, swollen nipples, running it over her sex. My cock fought again, uselessly, against the unyielding cock cage. She would go on like that for a while, saying nothing, until she would take my hand on her belly and leave it there with our fingers intertwined. In the end, we both fell asleep.

Every day went by in a similar way, with audio calls during which the two of them masturbated until they were about to cum. Every day Mary got more and more aroused and reached the point where she was about to cum much sooner and had to exert more effort to avoid reaching orgasm.

As for me, I was getting more and more excited and craving more and more for Mary. In the evenings, when she would run my hand over her body, I couldn't help but lick her neck and shoulders, savouring with relish the scent and saltiness of her sweaty, aroused body.

On Thursday, when the game was over, we confirmed the date for the next day, directly in the motel room, which Matthew had already booked, as on the previous Fridays.

That night, like the previous ones, when we were in bed, Mary began to guide my hand down her body. But instead of doing it quietly, she began to whisper, "I'm looking forward to tomorrow so I can fuck you both and finally cum. My skin is hypersensitive. I try to run your hand over my skin as a way of calming me down and lessening the excitement, but it's worse. I get more excited. It's a feeling similar to when you've been bitten by mosquitoes on your arm and you gently run your hand over it to calm yourself and avoid scratching. Sometimes it calms you down, but other times, it itches even more. This time, it gets me more and more aroused."

She brought my hand to the entrance of her vagina, which was wet, and continued, "Look, I'm dripping with desire to fuck; check it out," and pushed my fingers inside her vagina, which was effectively soaking wet. She slowly withdrew them and rested them on her clitoris, which was swollen and sensitive. Then she brought them back inside her. Gradually, she picked up the rhythm, moving my fingers from inside her to her clitoris and back in again, each time deeper and deeper.

She started panting and fondling her breasts with her other hand. I, for my part, started caressing her back with my free hand. Her rhythm and arousal increased, until suddenly she said, "To hell with it! I can't wait for tomorrow! I need you to fuck me right now!"

She took from the bedside table the little chain where the key to my cock cage was attached and released my cock, which instantly became erect.

I didn't need any more; I jumped on her and started kissing and licking her all over her body, while my hands were running all over her body at the same time, eagerly feeling every inch of her skin. The sensations of my hands, my mouth, and my whole body were mixing in my head in a whirlwind.

It reminded me of what I had read about synaesthesia, which is the characteristic of some people to perceive stimuli from one sense to another, like hearing a sound when tasting a food or feeling a taste when seeing a certain color. I thought I now understood people who have this ability. In my head, the feel of Mary's skin, the sight of her body, the taste my tongue and lips were picking up, her words and gasps reaching my ears, all intermingled, such was my excitement and my desire to be with her.

Mary was caressing and kissing me as passionately as I was, writhing and rubbing herself against me with her whole body.

She spread her legs and, looking into my eyes, said, "Fuck me, Charley. I want to feel you inside me. I want to feel your cum filling me."

I positioned my cock at the opening of her vagina and began to slowly penetrate her. She was soaking wet and dilated; I entered smoothly and without any difficulty into what felt like a warm, soft, and welcoming cavity.

After all the excitement of the week, as I felt the pleasure of being inside her, I had to try hard not to come immediately. Mary wrapped her arms and legs around me. I started pounding away, pumping my cock in and out, and she came straight away, unleashing my orgasm as well. A very intense orgasm, like few others, ran through my whole body. My testicles contracted and expelled streams and streams of semen generated and accumulated during a whole week of horniness.

After a few seconds to recover and enjoy the sensation, she continued, moving against me, rubbing her pubis and clitoris against my pubis, and chaining orgasm after orgasm. I watched her enjoy it, and although I couldn't ejaculate as quickly again, I kept my erection and enjoyed watching her flushed face, her eyes closed, and her mouth half open as she gasped and let out a little scream each time she reached a new climax.

After a long time of enjoying each other, we fell asleep spooning and cuddling. After a few hours, before I knew it, I was caressing her and inserting my cock, erect again, into her vagina from behind. We both reached orgasm again and fell asleep again.

The next morning, after showering, Mary put on my cock cage, and we headed to our office.

In the afternoon, as we transformed into Molly and Buck, we commented that we had 'cheated' in the game and hadn't managed to last without coming. Formally, the cheating had been done by Mary, as she was the one 'playing' and having the sessions with Matthew. I was not supposed to participate, and it was assumed that I would continue with the cock cage until Friday night.

We hesitated whether or not to tell Matthew. In the end, we headed for the motel without having made a decision. We had an attitude that reminded me of students who have done some prank that no one knows about yet and are going to have a meeting with the school principal. Will they tell him? Will he find out?

When we got to the room, we knocked on the door, and Matthew opened it and greeted us with "Hi Molly, Hi Buck."

Once inside, Matthew pounced on Mary and began to kiss and grope her eagerly.

Mary responded, though with less enthusiasm than he did. He kept kissing and fondling her until he noticed that I was standing in the middle of the room, kind of hesitating. Then he said, "Buck, you know your place. You're not supposed to be visible or participate."

I took the chair, went to the closet, and sat there, closing the doors and looking through the slats in the door.

From there, I watched as Matthew removed his clothes, then removed Mary's, and continued to hug and caress her naked body.

He gently but firmly pushed her shoulders until she was kneeling in front of him, her mouth inches from his cock.

"Go on, suck me off so I can hold out longer when I put it into you, or I'll cum too soon, and you sure wouldn't want that, would you?" said Matthew.

Mary opened her mouth, took the tip in, and started licking his cock. Little by little, she was admitting more and more of his shaft, until she had as much as she could fit in her mouth, with the tip of his cock touching the entrance to her throat and her lips wrapped around his thick cock.

She started bobbing her head up and down, pulling his cock out and putting it back in, until he held her head in both hands and said, "I can't take it anymore; I'm going to cum; here's the cum from all week. Don't swallow it; I want to see it."

He stayed still and ejaculated in her mouth for a long time. He must have accumulated a huge amount of cum. When he finished, he said to Mary, "Molly, show me your mouth. I want to see everything I've built up before you swallow it."

Mary opened her mouth and showed him a large amount of white, viscous semen. Then she closed her mouth, and I watched as she swallowed all the cum. I thought that Mathew, the two times she had given him a blowjob, hadn't even asked if she wanted to swallow his cum or not. He seemed to take it for granted that she should. I knew she didn't care, but that indicated an attitude on his part. However, as Mary used to say, on these dates she became a totally different person. If she had been the real 'Mary', she would not have admitted that he took it for granted that she had to swallow it, but in her role as Molly, she let him lead and direct her.

When she recovered, he rested his hand on her shoulder and directed her to the bed. Once there, as they lay there, he began to caress her and said, "You look a little unenthusiastic, Molly. After all week with our calls and our masturbation sessions without coming, I thought you would be totally desperate. I figured you'd be sucking my cock like it was a glass of water you find in the desert, but I've seen you even less excited than the first few times we met."

"Well, Matt," Mary began reluctantly, and not knowing how to continue, "I have a confession to make. I'm sorry, but yesterday I couldn't resist any longer, and I ended up making love to Buck. I was so aroused, and almost without realizing it, I found myself fucking him."

"But we hadn't agreed on that," Matthew replied in an annoyed tone. "We had agreed that we would both hold each other until today, to make it more intense."

"I know, you're right; I couldn't hold it in. I'm sorry."

"Well, we agreed that there would be some kind of penalty for the one who didn't comply or a bonus for the one who did. So I'll figure something out. Now let's get on with it."

He continued to fondle and lick her breasts, and before long, he had regained his erection. He positioned himself on top of her and began to penetrate her. Immediately, he was fucking her with all his might, moving her with every thrust and making her breasts sway. His usual force and roughness, augmented by his week of waiting and provocation, made for a rough and wild encounter. Mary began to get more and more excited. After all, it was what she expected from him—a more 'primitive' and dominant sex, different from the one she had with me. He was fucking her with little concern for her pleasure, and I think that turned her on. That feeling of being 'used' was an exciting change, as it was very different from her relations with me.

For my part, watching the scenes taking place in front of me, I was very excited. Once again, I had a dual sensation: on the one hand, watching a very exciting erotic movie with some actors; on the other hand, imagining that it was me and not Matthew who was receiving Mary's attention; and on the other hand, feeling envy and desire for seeing the pleasure that Matthew was receiving and that I could not receive as a spectator, and on top of that, with my cock locked in the cock cage.

With all these sensations and excitement, my cock was trying to get erect, and the tip was oozing pre-cum. I took off my trousers and pants so as not to get them soaked and stroked my cock and testicles as a way to appease my desire. Before long, rather than stroking myself to calm my arousal, I was unknowingly using the liquid oozing from the tip of my cock to lubricate it, and I was masturbating with my hand. My cock stretched painfully from my testicles and seemed to be trying to escape through the slots in the bars of the cock cage, but I moved the cage as little as possible to satisfy my arousal.

After a while of thrusting, she wrapped her arms around him, arched her back, and, letting out a muffled scream, she came. He kept pumping hard with his hips until he pushed all the way in even harder, threw his head back, and came, saying, "I'm coming'."

He stayed in that position for a long time. I imagined Mary's vagina filling with his semen. Mary, possibly feeling the warmth and wetness of his semen, again reached new orgasms in a chain.

After a while, he lay down beside her. I waited impatiently, wishing they had finished, but they continued together without either of them getting up. After a while, he became aroused again, started stroking Mary, and guided her to get on top of him.

He held his cock in his hand, and she moved down until it was fully inserted into her vagina. She was totally soaked, from her own fluids and the semen from his previous ejaculation, so she had no trouble impaling herself on his thick cock. He grabbed her breasts, began to fondle them, and, moving his hands up and down without letting go, moved her to fuck herself against his cock. She closed her eyes and let herself be guided. She looked aroused, savouring the sensations of his hands squeezing her breasts and fiddling with her nipples, and of his cock thrusting in and out of her wet slit, her stretched vaginal lips enveloping his shaft.

They went on like this for quite some time, as they had both had previous orgasms, but eventually, they both climaxed again and again as Matthew ejaculated inside Mary.

Mary dropped, panting, on top of Matthew, her breasts flattened against his strong torso, his cock still inside Mary.

When I saw them both lie still, my anxiety grew. Seeing my release approaching, I wanted to make love to Mary soon.

I noticed he was whispering something to her. She looked at him with surprise, and he seemed to reaffirm what he had said.

Mary got up, came to the dressing room where I was, opened the door, and said, "Buck, Matthew says that as a reward for holding on during this week's game, and considering he's always paying for the room, he wants to sleep with me from now on. You'd have to wait until morning to stay with me."

I protested, "But I want to make love to you and sleep with you."

"Yeah, and so do I. But he's right, I lost the game, and if we don't follow the rules, any game loses excitement. Besides, think that on Fridays we're tired from the day's work and from the whole week. In the morning, we would be much more rested. It's always happened to us that on weekend mornings we've enjoyed sex more, haven't we?"

"Yes, you're right."

"Besides. All week, we have already slept together. It might be a new experience for me to sleep with someone. Don't worry about it. In the morning, we will be together. For this change, I don't think it's worth it to stop seeing Matthew. You know he said we could turn down proposals, but that meant no more dating."

"Well, if it's okay with you, all right."

"I love you very much, and I hope you're well tonight. In the morning, we'll be together," Mary said, hugging and kissing me.

The two of us together spread out the folding bed inside the dresser, and I lay down on it.

She came back to the bed and lay on her side, looking at me. Matthew was lying behind her, and he slipped his arm over her, gripping her breast with his hand, as if taking possession.

I fell asleep, excited, dreaming of all I had seen.

In the morning, I was awakened by the sound of the shower. I saw that Mary wasn't in bed; only Matthew was, so she must have gone to take a shower.

The noise also woke Matthew, who got up and went to the bathroom. As he went in, he left the door open, and I could make out Mary's beautiful body through the slightly steamy shower screen.

He was probably peeing, as I heard the flushing noise shortly.

Suddenly, I saw him step into the shower, grab a sponge, and start scrubbing Mary's back. I didn't know what to do—whether to go over there or wait to see what would happen. Did his 'sleeping over' mean more than just 'sleeping'? When would their date 'end'? I wasn't supposed to intervene, but it wasn't clear to me for how long. She didn't seem to say anything or refuse, so I kept waiting. I wasn't supposed to participate until I was told to.

While she was lathering herself up from the front, he was running the sponge all over her backside. I watched as he ran the sponge gently over her back and paused quite a bit, caressing her ass and moving the sponge between her legs, clearly massaging her entire vulva. After a few minutes, he put the sponge down and began to move his hands up and down her soapy body, caressing her ass, shoulders, and neck.

Then, moving his hands to the front of Mary, he began to massage her breasts, sliding his hands gently over her wet, soapy body, starting at her tummy, moving over the delicate skin under her breasts, then grabbing and sliding up and down the full sphere of her breasts, pinching her nipples, and pulling them with his fingers until the soap made them slip and return to their position with a gentle swaying motion. He kept it up, and she relaxed, closed her eyes, and leaned back, resting her back against his shoulder.

His cock, fully erect, was between her buttocks, rubbing and sliding up and down.

After a while, he moved his right hand down and began to slide it between her legs, while his left hand began to move all over the front of her torso and breasts. I could just make out through the steam that filled the shower screen as she opened her mouth, gasping for breath, and brought her hands to her breasts, sliding them down and playing with the slippery feel of the water and soap.

It went on like that until she brought her hands back, hugged his neck, and stiffened. I was sure she had just come.

He spun her around and gently pushed her forward until she rested her hands on the glass shower screen. Now I couldn't see them both from the side, but they were facing me.

He bent down slightly, motioned with his hands for Mary to spread her legs, guided his cock into her pussy and pushed firmly, penetrating her until he had his cock all the way inside her. He began to fuck her, pulling back and thrusting forward, moving Mary's whole body and swaying her breasts. She had to hold her hands tightly against the wall so she wouldn't hit her head.

From between her legs, I could see his cock almost fully extended and penetrated all the way to the bottom, until his testicles were pressed against her sex.

He continued to fuck her energetically, his hands firmly gripping her breasts. She kept her eyes closed. She stiffened several times in what I assumed were orgasms. He finally stopped with his cock deep inside Mary's vagina and gripped her breasts tighter. I saw his testicles contract, and he climaxed, ejaculating inside her. He stayed like that for a while and then withdrew his shaft. As he pulled out, I could see some of the semen she had received during the night and the semen he had just received running down her legs.

They both sat up, lathered up separately, finished showering, and, after drying off, returned to the bedroom.

Matthew got dressed while Mary finished drying her hair. I came out of the dressing room and headed towards Mary. When she went to get the little chain with the key to my cock cage, Matthew said, "Wait a minute, Molly. We agreed that Buck would only fuck you in front of me, didn't we?"

"Well, yes," Mary replied.

"And besides, I had understood that your game consisted of Buck waiting all week and that he could only fuck you one day a week, right?"

"Yes, that's the game we have."

"And he was already with you on Thursday, wasn't he?"

"Yeah."

"So this week, he's already had his day."

"Well, but that one didn't exactly count."

"Of course it counts, or didn't you two make love and he came inside you? If you and I met up on a day that wasn't Friday, wouldn't it count?"

"Yes."

"Then it's not his turn today."

I followed the conversation, which was leading to a point I didn't like at all.

"Besides, so that it doesn't happen again, I think it's best if I keep the keys. That way, you avoid temptation. Molly, can I have the keys?" Matthew continued.

Mary hesitated reluctantly.

Matthew insisted, "You said your game was to wait all week until after Molly and I were together, didn't you, so I wouldn't change anything. I'd bring the keys every time we meet, but that way you don't cheat yourselves."

"I didn't bring all the keys; we have a security key in case it gets lost or there's an emergency," Mary said.

"Well, I've got a lock like that in the car; I'll get it, and we'll use my lock."

"And what do we do if there is an emergency or you lose the key?" I asked.

"In the car, I also have a little lock box that we use in my second-hand car job when we want to leave some keys for a client and he wants to come during out-of-office hours. It is the same system that is also used in holiday flats to leave the key for guests. The box can be opened with a combination. We can put one of the keys from the padlock inside, take the box with you, and if there is an emergency, I will give you the code. We just replaced one of the boxes we used in the shop with a newer one, so I have the old one in the car," Matthew said as he walked out the door.

I turned to Mary with concern and said, "Mary, I don't like this. Why does he have to have the key?"

"You once remarked that you were a little disappointed that I wasn't strict enough when we were playing tease and denial and that I released you prematurely, didn't you?"

"Yes. I commented on that."

"And in fact, this week we haven't been able to hold each other, have we?"

"That's right."

"Then why not let him have the key? Imagine if we put the keys in a safe deposit box that only opened on a programmed schedule one day a week. It would be similar, wouldn't it?"

"Yes, maybe."

"Well, then it shouldn't be a problem."

"But I find it humiliating that Matthew has it in his hands to decide when I can have sex with you."

"He just keeps the key. We decide when. And when we get tired of dating him, things go back to the way they were."

"You're right, but I don't like it. Plus that new condition of sleeping with you; and also fucking you in the shower. I was looking forward to being with you."

"Sorry, it wasn't planned. I was surprised, but the truth is that it was a fantastic fuck. You know what I like when we make love in the shower. Look, let's wait for the next day, and if it doesn't suit us because there are too many conditions or we don't both feel comfortable, we'll leave it. Is that OK with you?"

"Okay."

At that moment, Matthew returned from picking up the items in the car. He took Mary's key, opened the small padlock that locked my cock cage, and replaced it with his padlock. Then he put one of the padlock keys in a pocket in his wallet and one of the other keys in the lockbox. It was a small box, with just enough room for a few keys, but it looked very solid and thick-walled. Considering that they kept expensive car keys in that box bolted to an outside wall of the shop, I thought it had to be very secure.

He closed the box and handed it to Mary. The box had a small keypad and a display.

"The lock is electronic and is powered by a battery that lasts 5 years. It has a 5-digit key, so there are 99,999 possible combinations. If you took 2 seconds to try each combination, trying for 24 hours in a row, you would be able to find the key in about two days. But as it is an electronic lock, each combination attempt deactivates the keypad for 5 seconds MORE. That is, after the first failed attempt, you have to wait 5 seconds, and on the second attempt, 10 seconds, until you can use the keypad again. That is, when you reach the 10,000th attempt, you will have to wait about 14 hours for the next one. And when you reach half of the combinations, you will have to wait almost 3 days between attempts. It would take years to find the key, so it's a very secure system. There's a reason we choose it for car keys," Matthew explained.

Then, heading for the door, he said goodbye, "Well, it's been a great night; see you next Friday."

I stared at Mary, not knowing what to say. She came over to me and hugged me.

We lay hugging each other on the bed. I felt frustrated and excited at the same time.

I couldn't deny that Mary was partly right, but I desperately wanted to make love to her. Besides the touch and sight of her body, the thought that there were no more 'shortcuts' and that I would have to wait all week before I could free myself from my cock cage and feel my cock inside her warm pussy made me crave her even more. The thought that I had just watched Matthew enjoy her body and cum inside her and I would have to wait made my cock swell and try to get erect. I thought I had fucked her on Thursday night and would have to wait until Friday night or Saturday morning. The longer I would have waited. By then, when I got to be with her, Matthew would have fucked her six or seven times (four today and probably two or three the next day), and I had none.

The desire was growing inside me. I began to stroke Mary more and more excitedly, the feeling of unfulfilled desire growing inside me and making the feel of her skin multiply in my brain, as it did when I knew I couldn't consummate the intercourse. Knowing that I could not cum, each sensation was like water for the thirsty in the desert—something intense and overwhelming.

I caressed her breasts, her belly, and her shoulders, kissed her neck, and inhaled her scent. My hands moved all over her body, and all my skin, in contact with her body, sent delicious sensations to my head.

I got on top of her and started licking her breasts and nibbling her nipples. She returned my caresses; her hands stroked my hair, caressing my back, raising even more sensations.

I couldn't help but try to penetrate her with my cock. I pushed and felt the skin of my cock, between the bars of the cock cage, enter her hot vagina, all wet and soft.

It was a maddening sensation. I could enter inside her, but not much, as I couldn't reach erection and have my full length, and besides, the curved shape of the cock cage prevented a natural penetration. Holding my cock imprisoned with my hand, I was able to enter a little inside her and put it in and take it out a few centimetres, but of course it was totally insufficient to reach orgasm. The rubbing of the shaft skin in the few places that the bars allowed me to touch the inside of it, although it gave me immense pleasure, only served to excite and frustrate me more.

I went on and on for a long time with this attempt to fuck her, getting more and more excited but never getting close to orgasm. I tried to focus on the sensations my cock was receiving—the feel of her skin, how beautiful she looked, her face and body when she had reached orgasm—anything that would turn me on and might help me reach orgasm. But with my cock bent and constricted, it was physically impossible.

I tried for a long time, getting more and more desperate, until I gave it up as impossible.

I let myself lean on her, telling her that I loved her, our heads pressed together, stroking each other's hair, and after a while of intimacy and tenderness, we got up and went home.

To be continued. Chapter 9. A car ride