Mateo’s flatmate, Elisa, is a total slut. Nearly every night of the week, Elisa brings someone back to their shared flat and fucks their brains out. Sometimes, she meets them at a club and they slip their hands up into her dress and finger her on the dance floor. Other times, she picks them up at the bar and she sucks their cock in the back of the taxi as they travel back to her bed. She even picks them up while she goes about her day and runs errands. Some of her partners frequent the apartment, but most are strangers who only visit once. However she reels them in, it doesn’t matter. She is always wet and willing by the time they come through the door together.

Mateo doesn’t mind-- he loves to observe her little torrid affairs with men and women. In fact, after she moved in and he realized how much Elisa loves sex, he made sure that the little air vent which connects their two rooms could serve as a peephole into her room. Night after night, Mateo stands on a stool in his room and watches the sex acts unfold as he strokes his five-and-a-half-inch cock. He rarely has his own lovers over, but regardless, he feels satisfied with his voyeuristic sex life. He also presumes that Elisa knows exactly what he is doing and that she doesn’t seem to care. And while the two have lived together for years, they have never hooked up or really spoken about what happens in apartment D3.

Not that Mateo isn’t attracted to her. He truthfully thinks Elisa is one of the sexiest women alive. She has these long, sleek, beautiful legs that are always perfectly waxed. Her thighs are thick and her ass is plump. Her blonde hair reaches nearly to her waist. And her tits are out of this world. They are the size of firm mangos with nipples that pointed straight up to God.

This past winter, Mateo started to notice that Elisa had not been enjoying sex as much as she used to. She was still hosting plenty of lovers, from all walks of life, but she was simply not orgasming with them! As he watched and listened, he could tell that she was barely enjoying herself with her new partners. He hated that she was just going through the motions. By spring, she was trying more extreme acts and moves, but nothing changed. By summer, Elisa was not even able to bring herself to completion by masturbating. So, Mateo decided to do something about it.

***

One hot Sunday in June, Elisa came home from a thirty-minute run. After throwing down her keys, she noticed that there was an envelope with her name on it sitting on the kitchen counter. She quickly opened it up while she gulped down a glass of cold water. Inside, she found a small black leather choker necklace with the words ‘SLUT’ written in gold lettering. Intrigued, she hastily read the note.

Slut,

I’ve noticed that you have lost your orgasm. This is not acceptable. As you know, I find so much pleasure in your ability to cum (as I am sure you do). This week, I want to help you cum again. I want to make your panties flood with excitement and for you to moan and scream again. In order to do so, you must follow all of my instructions and rules. If at the end of it you still have not cum, I will cover your rent for the month.

Here are the terms for the week:

 1.   You will only be addressed as ‘slut’ and you will refer to me as ‘Master’. Any other participants will be referred to as ‘Sir’ or ‘Ma'am’.

2.    Your safe word is ‘Delta’. If you say this word at any point, all actions will cease immediately until a further agreement is reached. Your safety is important to me.

3.    You will relinquish all control to me this week. You will have no say in what is done to you (and by who) and what happens to you.

 4.   You are not allowed to self-pleasure yourself this week without my expressed permission, nor are you allowed to bring home any partners, sex toys, costumes, etc.

5.    You must be in the apartment between 6pm-10pm every evening. During those times you must wear the collar provided and nothing else unless I lay out an outfit in your room. At 6pm you must present yourself in the middle of the living room, on your knees, face towards the front door.

6.    You are encouraged to orgasm as many times as you are able.

If you agree to these terms and conditions, sign this note at the bottom and slide it under my bedroom door. We will start tonight.

Hope to see you at 6.

Your new Master,
Mateo

Holy. Fuck. Elisa read the letter again. And again.

Where was this coming from? she thought to herself. Mateo had never once made a move on her-- not that she hadn’t thought about it-- but she definitely was not expecting such a saucy and sexy letter from him. Nor was she expecting him to initiate any kind of sexual adventure. But, she had to admit, her panties were soaking and this was the most turned on she had felt in ages. Even though parts of the letter worried her, like the mention of other participants and relinquishing all control, Elisa knew without a doubt that she was going to present herself to Mateo at 6:00 pm. She signed the note without further delay and slid it under his door.

All day long she thought about Mateo and his wild proposition. Elisa had purposefully never hooked up with him because she did not want their living situation to get awkward. And, if she was being honest with herself, she did find him a bit creepy and pervy, especially when she realized that he was peeping in on her. At the time, she was so livid that he breached her trust like that, that she nearly stopped fucking the stranger in her bed to march over to his room to give him a piece of her mind. But instead, right at that moment, the thought of his voyeurism made her cum harder than she could have imagined.

At five feet, nine inches, Mateo was shorter than most of the guys she liked but taller than the women she went after. He had a beautiful shade of terracotta skin and jet black shaggy hair. He was never able to grow a beard, but his strong, chiseled jaw and deep, dark-set eyes made up for his lack of facial hair. Mateo also enjoyed working out, so he was fit and toned. His arms were covered in old-school tattoos and geometric shapes. At certain moments he seemed young and naive, but in some light, he looked like a total bad boy. Hmmm, thought Elisa, I think I might just cum this week.

***

When Mateo walked through the front door at 6:05 pm, he was more than pleased. Elisa had followed his directions to the letter: she was butt-naked, wearing nothing but the black collar, on her knees and facing the door. Her blonde hair was high up in a ponytail and her eyes were turned down either from shame or to hide her obvious excitement. He ignored her.

He walked into his bedroom and put down his things, leaving her waiting. After a few moments, he came back to the living room holding a blindfold. Without speaking, he carefully veiled Elisa’s vision. Then, he leaned down and whispered,

“Get on your hands and knees and stick your ass up in the air”, he quietly demanded before biting her ear softly.

Elisa eagerly complied, ready to begin. But again, Mateo left her.

Elisa felt like this was torture. While she was kneeling on the soft carpet and she was definitely fit enough to be able to hold this position without straining her body for a long time, she was ready to play right now! Why isn’t he touching me? She thought over and over. When will this begin? I want him to touch me so badly.

The slut barely registered that a steady glob of cum was starting to pour out of her pussy and soak her flower.

Suddenly, she felt a finger slowly trail over her left foot. The finger lightly caressed her ankle, then it went up to her calf, the back of her knee, and up her thigh. After a moment, the same finger caressed her right foot and followed the same pattern up her body. Then, the steady finger started to draw invisible circles on her upper thighs and ass. The finger went close-- but never touched-- her more sensitive parts. It was intoxicating for Elisa.

The lone finger continued to explore her body, roving over her back, shoulders, neck, both her arms and hands. Her stomach, her chest. Finally, the finger started to caress her face and when it got to her mouth, she sucked on it greedily. Then, just as suddenly as the touch appeared, it was gone again.

Elisa continued to wait on her hands and knees, but they were starting to hurt. Mateo (or whoever was touching her) had been gone for at least ten minutes. She sat back on her haunches and rubbed her palms and knees.

“Slut! I didn’t tell you that you could get up. Back on your hands and knees!” Mateo’s voice boomed.

Ashamed and frustrated, Elisa resumed the position, moments before she felt a hard smack hit her ass.

Smack.
Smack.
Smack.

The bare hand hit her bottom again and again, causing her to yelp out in pain. Then, something firm and straight hit her bottom. A paddle? Regardless, the act of being punished made her feel wanton again-- she found herself enjoying this type of touch.

“When you do not follow my instructions, you will be punished. Do you understand?” Mateo declared after hitting her bottom with the paddle again.

“Yes, Master!”

“Good.”

Mateo was not done playing with his poorly behaved sex-toy. He used both of his hands to roughly explore the body he had so delicately traced and explored moments before. He squeezed Elisa's breasts in his hands before kneading her ass. He intended to leave little love marks and bruises in his wake. Sometimes, Elisa whimpered at his touch, but most of the time, she took it silently. Mateo moved behind Elisa and pushed her legs wider apart so he could get a better glimpse of her soaked pussy. He had never seen it up close before and he found himself enjoying staring at her flower. She had a big prominent clit and dark brownish-pink lips. They were opening up for him, lining her vagina as if they were petals. He grabbed his phone and quickly took a picture.

“Pull your ass cheeks apart, I want to look at your star.”

Elisa did as she was told. Mateo loved this sight so much he decided to take another photo. I am going to be taking a lot of pictures this week, he thought to himself.

“I’ve been watching you get fucked for so long, you’d think I’d know the answer to this. But have you ever gotten fucked in the ass before, little slut?” Mateo asked.

Elisa hesitated. She was scared to try anal and never had. She never let anyone come near her asshole and she didn't like anything too painful, although she had tried some BDSM recently. She really wasn’t sure she wanted Mateo to fuck her there. But..she wasn’t about to say the safe word, either.

“No, Master. Never,” she muttered.

Interesting, thought Mateo. An anal virgin. His five-and-a-half-inch cock stood to attention.

“This week your ass, like the rest of your body, is mine. If I want to take it, I will take it. Do you understand?”

Silence.

Smack.

“Do you understand, slut?”

“Yes, Master," she whimpered.

“Stay exactly like this.”

Elisa heard Mateo get up and walk away. She was frustrated she still could not see. She was also horrified that she would probably be fucked up the butt tonight and she felt too exposed in this position. At the same time, it felt like all of the blood in her body had rushed to her clit. She was eager to touch herself there and feel its release. Luckily, Mateo came back to the room.

Without so much as a warning, Mateo’s tongue probed at her star. It circled around and around her tight little hole, jabbing at the sensitive skin and fighting its way inside her. Elisa let out an involuntary moan. When her asshole was nearly as wet as her sloppy pussy, Mateo pushed one finger deep inside her backside. He wiggled it around, probing in and out. Another moan escaped from Elisa's lips.

That’s when she felt a cold stream of lube hit her backside. Holy shit, no. I am not ready for this, Elisa thought.

Just as she was about to say “Delta”, Mateo explained, “I’m not going to take your ass right now. In fact, I want you to stay an anal virgin nearly all week. Instead, I am going to help prepare you for my meaty cock”.

Something cold and smooth pushed up against her anal entrance. Mateo pushed it into her ass, relentlessly. While her virgin hole initially resisted it, eventually the rim of her ass closed securely around the small object. He allowed her to drop her hands.

“It’s a buttplug,” Mateo clarified. “You’re going to keep it inside of you for the rest of the night. I may put some bigger toys in you later this week, but for now, it seems like your ass can barely handle this small thing!”

He smacked her ass again. Damn, I love watching it jiggle.

“Get on your back, now. You’ve been a good, obedient girl for me tonight. I’m going to reward you.” Mateo stated.

Elisa was relieved. Unfamiliar with the foreign object embedded in her ass, and still blindfolded, she moved slowly onto her back. She lay with her knees bent. Mateo watched her chest and stomach as she took deep breaths of air into her lungs. She was trying to calm down. Is she excited or scared? Mateo pondered. Either way, her pussy is soaked!

Mateo moved on top of Elisa so he was straddling her body. Elisa was surprised to feel that he was naked too. He bent down to meet her lips and kiss her wildly. She welcomed his tongue with hers and eagerly kissed him back. He tasted like whiskey and cigarettes. She tasted like fear and desire. Elisa liked that she could feel Mateo’s hard cock on her body. It rested in between her legs and twitched occasionally as he kissed her. I wish he would fuck me with it, I want to feel him inside of me, her mind raced.

Mateo slowly started to kiss her ear and neck, moving down her body. He played with her firm tits, both with his mouth and his hands. Elisa’s master then started to kiss her stomach, her hip bones, and the inside of her thighs. Finally, he started to lap up her pussy.

Elisa was so turned on she couldn’t help but grind into his face. She was worried for a moment that her master might reprimand her, but he was busily licking the juices from her folds. Eagerly, Mateo started to finger her cunt. He put two fingers into her pussy, slowly bringing them in and out. Then he put a third. Elisa was closing in on the orgasm that had eluded her for so long. She felt herself getting wetter and wetter. The buttplug in her ass was pulsing-- the muscles in her ass seemed to have a mind of their own.

Mateo pushed Elisa’s bent legs as wide as they could go. He joyfully watched his fingers go in and out of his little slut. God, she is so wet and open for me. He decided to try to put another finger in. With his fingers deep inside her, he used his exposed thumb to stimulate her clit. Elisa was wiggling and flopping around, in the throes of an orgasmic spell. He bent his thumb close to his palm, trying to make his hand as small and flat as possible. Then, ever so slowly, he worked his entire hand inside her.

Fuck, this is so hot, I’ve always wanted to fist a slut, Mateo thought.

“Oh! Oh! What are you doing to me? Ohh ohh! Ohh yes, that feels so good. I feel so full. Oh. Oh yes! Yes, Mateo! Yes!”

Mateo slowly flexed his hand inside her. The image of a pussy wrapped around his wrist was the hottest thing he had ever seen. He reached for his phone and took another picture. His cock was the hardest it had ever been; he thought he might explode any second.

Elisa was orgasming, there was no doubt about it. Mateo continued to move his hand slowly and rotate his wrist so he could feel every inch of her and so that she would feel his erotic touch. Elisa was screaming from pleasure and pain, wildly bucking on his wrist. Just when she was peaking, Mateo used his other hand to stimulate her clit. She screamed, arched her back, and felt that sweet release wash over her.

Mateo slowly pulled his hand out and then tugged out the buttplug. Elisa giggled, as she sometimes did after an intense orgasm. Fuck yeah, I am glad she enjoyed that, Marco thought to himself. Just then, he realized that he himself was about to release his own load. He quickly moved his body over Elisa and positioned his shaft at her mouth.

“Suck me, slut. Suck me dry”

Elisa happily started sucking on his cock. It tasted like delicious precum and sweat. She sucked on the head and tried to fit the entire thing in her eager mouth. As he squatted over her, she used one of her hands to cup his balls, and the other was on his thigh to steady herself.

“Oh yes, that feels so good, baby.”

"Mmmm."

She knew that he would blow any moment. She relentlessly lapped at her favorite kind of lollipop and then, once again, took the entire length into her mouth, swirling her tongue over and over across the head. Finally, she felt cum shoot out into her mouth. She swallowed every drop and dropped her head back to the floor, smacking her lips.

A moment later, Mateo had effortlessly picked her up and carried her like a newlywed bride into her bedroom. He softly put her on her bed.

“Leave the blindfold on until I close the door. I had a fun time with you tonight, slut. And I hope you did too. I can’t wait to see you tomorrow at six,” he said, before bending down to kiss her one last time.

“Thank you, Master.”

Mateo quietly walked out of the room and closed the door. He leaned up against it and sighed. Tonight was perfect, he thought. Now...to plan for tomorrow and the rest of the week.

To be continued...