Naked other than for a locked chastity belt, Kate stepped into her bath, hoping that the candles, the bubbles and the soft music would relax her. She tied her unbrushed blonde hair up into a bun and lay back to daydream about her morning with James. She pictured his tongue pushing into her chastity belt and reaching so tantalisingly close.

Lubricated by the scented bubbles, she tried to push her own fingers inside, but the belt was so tight that her fingers just hurt as she forced them towards her most intimate areas. She pulled them back out and adjusted the steel against her soft pale skin.

She stepped out, dripping, from the warm bath and wiped the steam from the large mirror. The belt was truly skin-tight, and its steel curves were as sexy as hell, which only made her predicament worse. She fantasised about the tables being turned and that she had condemned Belinda to a life in this fucking thing. Fuck, she would sit astride Belinda’s lips and enjoy the pleading of a desperate woman.

“Fucking belt!” she moaned as she slumped in aroused frustration against the steamed-up mirror.

She fumbled through her pile of used clothes to retrieve her phone. Now on her knees in the corner of her bathroom, she spoke quickly and breathlessly into the phone, “Bel, please unlock me.”

“Put your jeans on, sweetie, and think of something else,” Belinda whispered, discreetly covering her red lips as she spoke.

Kate was breathing heavily, her mouth dry and hoarse, her fingers playing with the empty keyhole, “Please give me the key?” she pleaded.

Belinda crossed her legs and whispered, her lips touching the phone. Kate should know better than to beg; it only brought out Belinda’s sadistic side. She untied her ponytail and hid behind a curtain of dark hair.

“If I were there right now, what would you do to get the key?” Belinda teased.

Kate grabbed her steel crotch and cried out in frustration.

“You’d have to do better than that.”

“Bitch,” she whimpered.

“Enjoy celibacy, sweetie.”

-

Belinda returned home, walked into the courtyard and leant casually against James’s cell door, “Hi, darling,” she purred as she flicked back her hair as if to relieve tension from her body.

“How’s Kate?” James asked, walking up to his side of the door and gazing at Belinda through the grille.

“Maybe I’m being too hard on her,” Belinda sighed.

“Could you take a week's chastity?”

She looked up at James with large surprised eyes, extenuated by dark mascara.

“Me? No way!”

It was amazing how anything done regularly becomes habit. Having James locked in the cell still gave Belinda a buzz, but she now took it for granted. Of course, her man would be locked up and of course he would stay willingly under her control until she decided otherwise. In her handbag she had her phone, her purse and the key to his cell; it’s just how it was.

James found her nonchalance crazily sexy, but at times infuriating. Belinda was now sitting on the edge of the large wooden dining table, texting as innocently as any other woman. He couldn’t ask to be let out; he knew that would make Belinda leave him locked up for longer, so he had to tempt her in other ways. Other men may not spend hours under their partner’s lock and key, but then, maybe for that reason, other men didn’t find their partners so madly attractive.

James unbuttoned his shirt and pushed up against the inside of his cell door, his arms raised above the grille to let the light and shadows fall on his muscled arms.

“Talking about your crazy sex drive,” he said in his best gravelly voice.

“Maybe I do need to let her out,” Belinda replied.

“What about me?”

Belinda looked up as if remembering that she had a man in her cell and immediately felt the heat building in her body as the muscles on his arms and chest flexed and strained. Her breathing slowed; her warm breath trembling as she exhaled. Her eyes dilated, her legs spread as her entire body prepared to make love.

“Please don’t tempt me,” she breathed.

Her hips rolled as she walked up to the cell door.

“I’m desperate to tempt you, it’s the only way I can get out.”

Belinda unbuttoned her jeans to expose blue satin underwear, warm from a day against her body. She unbuttoned her tailored white blouse, exposing her breasts which were held tightly inside her white bra. James rammed his shoulder against the door, his efforts creating nothing but a dull thud that sent excitement through her body, making her jump and bite down on her lip.

“If you unlock the cell, I could help you undress,” James offered, frustrated as hell that his woman was out of reach.

“I want you amped up first.”

She dropped her bra to the ground and kicked off her ankle boots before sliding out of her jeans. James ripped off his remaining clothes, unhooking his erect cock from his boxer shorts.

Suddenly the sexual tension was broken by the doorbell. Belinda stopped dead for a second and then ran barefoot to the entrance camera, “It's Kate,” she sighed, skipping away, her breasts free, her round butt swaying in her blue panties.

-

“You lock me in chastity and then answer the door naked!” Kate exclaimed, now insanely desperate to get out of her belt.

“I’ve got my pants on,” Belinda corrected.

“Yeah, and they’re made of satin, not steel!”

“Oh, are you still wearing the chastity belt?”

Kate stood in her white tee shirt and jeans, her legs apart and hands on her hips trying to look authoritative, “Where’s the key?”

“Search me.”

Belinda stopped in the middle of the courtyard, mouth open with surprise, as Kate ran her hands inside the front and back of her underwear. In frustration, Kate knelt down and searched the shiny crotch, but with no key in sight she rested her face against Belinda’s thigh and moaned.

“Okay... well, that felt nice,” Belinda said.

“Wanna search mine?” Kate asked, her fingers kneading the steel.

“What’s inside yours stays inside.”

“Okay,” she whispered.

Belinda extracted herself from the kneeling blonde and unlocked James’s cell and then pulled back the bolts. She swung the heavy door open to reveal James scrambling to get back into his black boxer shorts.

“Fuck! Everyone is naked apart from me,” Kate moaned.

Belinda tenderly took Kate’s hands and led her over to a massage bench by the side of the pool. She laid out a white towel while Kate followed her instructions and removed her tee shirt and jeans and lay down on her front.

James walked up behind Belinda and wrapped his arms around her waist, “Just lock her in the cell while we make love,” he breathed.

Belinda gently bit his lip and playfully slapped away his hand. James stopped, knowing that his libido could never say no to her.

“Just calm her with a massage... and then lock her up,” Belinda winked, “I’ll be waiting.”

-

James pulled back Kate’s unbrushed blonde hair and then dripped oil onto his hands. He pushed into her calf muscles and then pushed up to her thighs. She had a perfect figure, slim and pale and almost delicate looking. He continued up to her bare buttocks, completely naked other than for the steel plate running up between her cheeks.

“I love your touch,” Kate moaned, reaching out with her left hand to explore James’s body.

James let her play as he moved up to her narrow waist and slender shoulders. Kate could feel herself floating as she shuffled to the edge of the bench to kiss James’s leg, nuzzling her face up against his boxers.

She turned over to let James gently stimulate her bare breasts. Scented oil and his tender touch made her nipples stand erect and she squealed with joy as he leant over to kiss them.  

 “So sensitive,” she cried, her hands now reaching up around his tanned neck to prevent him from leaving.

“See, you’re still a woman,” he whispered, Kate’s nipples still between his lips.

“And you’re a man,” her hands moved from his neck to his cock.

James stepped back and walked around to her feet, her fingers having created an erection that threatened to spill out of his shorts.

He continued for another half an hour, rubbing oil into every available part of her body, running his lubricated fingers as far they would go beneath the belt. She was at last still, her arms by her sides, breathing more slowly, her mind finally at rest.

“You can make it to the weekend,” James encouraged, running his fingers deep into the tight muscles at the nape of her neck.

“Can I stay here tonight?” she breathed; her eyes still closed.

“I don’t think you have a choice.”

Kate trembled excitedly as James rolled her over and eased her into a sitting position, the belt riding up between her legs. With one hand under her legs and one around her back, he carried her into the second cell and lowered the naked blonde onto the sofa.

Kate opened her eyes to see James leaving her alone in the cell. She saw the heavy door close behind him and a moment later heard the heavy bolts slide into place. She was suddenly calm, a warm feeling of helplessness, of being held and control and looked after by someone else.

Even locked up alone in a cell, inside an inescapable chastity belt, she could daydream about Belinda and James and what they would be doing only moaning distance away. She wanted to listen, but she just couldn’t stay awake. It was a hot evening and she drifted off listening to the summer breeze blow through the small grilled observation window.

-

The next morning Belinda and Kate were sitting at the breakfast table. Belinda was wearing a white patterned tee shirt with a cute bird motif and pink geometrically patterned yoga pants. Looking like a typical soccer mom.

Kate looked less comfortable. The top half of her body was now tightly enclosed in a black leather straitjacket. The straitjacket started between her legs, completely immobilised her arms and reached up to her mouth where a large gag protruded into her mouth with straps around her head holding it deeply in place. Ten brass padlocks secured all the straps, locking them all just a little too tightly around her slim body. There was also a black leather leash attached to her neck, the end of which hung loose as if waiting for her owner to claim her.

“She asked for the key,” Belinda smiled in answer to James’s inquisitive look.

“Oh.”

Kate was sitting upright on her stool, discreetly struggling to escape the straitjacket while moaning incoherently. She stopped as James ran his hands around her body, exploring the tightly pulled leather and playing with the padlocks.

“Oh, don’t feel sorry for her,” Belinda replied, kissing Kate on the cheek, “You know she loves it.”

Kate’s big aroused eyes and moans were now focused on James, which awoke Belinda’s all too powerful jealousy. Belinda clicked her fingers and pointed to the floor. Kate immediately obeyed, slipped her naked butt off the leather stool and knelt down in front of Belinda.

“You see?” Belinda smiled to James.

Belinda stood up, tipped her stool to the side and placed the loop at the end of Kate’s lead underneath the leg of her stool. She rested her pink Lycra pants back down onto her stool, the black leather sinking under her weight. Belinda uncrossed her legs to let Kate muzzle between her thighs.

“Your new pet?” James asked, pouring himself some black coffee.

“Sweet, isn’t she?”

“She’ll have her revenge,” James pointed out.

“Not if I never let her out of that straitjacket...”

Kate’s big blue eyes were still focusing on James, his black tee shirt and black boxers, his big brown eyes, stubble and unbrushed hair.

“I think she wants you to help her,” Belinda breathed, her Lycra-covered legs swinging open and shut with Kate’s head in between.

James watched Belinda carefully, a playful ‘challenge me’ look in her eyes. He knelt down and tried to unbuckle Kate from the straitjacket, but Belinda had padlocked every conceivable strap.

Kate watched him adoringly, giving a moan of pleasure as James brushed a strand of hair from her eyes and then tried to help her to her feet. There was another moan as the leash that was still connected to Belinda’s stool, pulled tight with no way to free it until Belinda stood up. Kate clambered to a crouching position and tugged again against her leash.

“You’re in a choker chain,” Belinda breathed.

Belinda stood up momentarily to whip down her yoga pants, her pink panties quickly sinking back into the leather stool.

Kate buried her face against Belinda’s inner thigh and moaned, a mix of total arousal and frustration. Kate trembled, agonisingly close to orgasm, as she worked her gagged mouth against Belinda’s body.

“Who’s jealous now?” Belinda giggled, her dilated eyes looking up at James.

James carefully stepped over Kate’s bound body and pulled Belinda to her feet.

“Maybe’s it’s time to let Kate out,” he said.

Belinda was buzzing as he held her tight, his arms pinning her to his body. She reached down and pulled a single small key from the waistband of her underwear.

“This might help,” she trembled.

Kate was aroused like hell and could feel her chest heaving as it tried to burst out of the straitjacket. She looked on, locked and gagged like a dangerous animal, as James used the single key to remove the locks on Kate’s straitjacket and then unbuckled the desperate blonde.

“Key to my pants,” Kate panted through her dry, stiff mouth.

Belinda shook her head and then laughed as James took her hand and led her back out to the courtyard.

“No way!” she giggled.

James slipped one hand under her legs and carried her into the cell as she wriggled and laughed in his arms.

“She’ll lock us both in!” Belinda cried.

“I know,” James replied as he lowered her onto the sofa.

Hampered by a fit of giggles, Belinda struggled to get free from James's embrace while watching Kate close the cell door and slide home the bolts. James let her go and she ran to the grille, her first experience of being on the inside of the door.

“Locked in your own cell, Bel,” Kate smiled.

“Oh my god, this is what’s it's like,” Belinda panted.

“Beautiful day,” Kate purred, blowing warm air at Belinda.

The sun was filtering through the courtyard, flickering light on Kate’s bare chest, her dilated eyes and erect nipples making for an even more dangerous jailer.

“Don’t burn your tits, sweetie,” Belinda replied.

Kate turned the key in the door’s lock and then slowly eased the key down inside the front of the chastity belt. Unlike her fingers, the key could fit inside and reach her vagina and offer just a little stimulation.

With Kate now engrossed by the new sensation, Belinda turned to see James prowling towards her, her primeval instincts making her back up until she touched the concrete wall.

“Oh my god!” Her eyes searched the locked cell and then jumped to the muscular guy who was now holding her head, ready to kiss. Imprisonment always heightened her sexual feeling and she gripped on to him tightly as he carried her to the sofa.

-

It was now early afternoon and Belinda was looking longingly through the grille at her friend who was sunbathing by the pool.

“Try the pocket of the shorts I wore to the gym on Sunday... In the laundry basket, I think,” Belinda called.

Kate flipped down her shades and looked across at the shadowy face behind the bars.

“You think?” Kate exclaimed. She tried to sound cool, but within seconds had jumped up and run naked and barefoot back into the house.

Bright orange gym shorts. She held them to her nose to breathe the scent and then hurried to unzip a small pocket at the back. One single key. She knew where the keyhole was; she’d been playing with it all week. With tears in her eyes, she pushed in the key and turned. The waistband and the crotch strap sprung open and she was free.

Kate showered and washed her hair for the first time in a week. She opened Belinda’s wardrobe and found the steel box. ‘Cool’, but she had more important things to do than lock people inside. She selected a short blue and white summer dress with its plunging neckline and a pale blue thong and bounced back to the courtyard with a vibrator in her hand.

“I’m out!” she cried, swirling in front of the cell to reveal non-metallic underwear.

James and Belinda were now both watching through the grille, both hungry and both hoping for some compassion from the horny blonde.

“You look gorgeous,” Belinda smiled, “Feel better for abstaining?”

Kate nodded as she wrung out her hair that was still dripping down her back. She turned one of the sun loungers to face the cell and sat down with her knees drawn up and apart. She touched herself with the bright purple vibrator and let out a high-pitched moan.

James and Belinda were strangely transfixed as their captor masturbated in front of them, a look of elation in her eyes. She came again before demurely placing the vibrator on the tiled floor and slinking up to the cell door, all dreamy smiles and eyelashes.

“Like my outfit?” she asked.

“You look gorgeous,” Belinda replied.

Kate returned to her sun lounger, her legs apart once more, playing aimlessly with the vibrator. She shuffled a little to get comfortable as her eyes closed and the warm vibrator finally switched off.

“Looks like we’ll just have to watch while she has her wet dream,” Belinda moaned.

“Frustrating, isn’t it,” James replied, leading her back to the sofa.

“Can’t she just unlock the cell first?”

“The number of times I’ve thought that about you...”

Belinda lay back on the sofa and guided James’s head down between her legs, “Well then, I guess you’d better start earning some brownie points for next time.”

-

Kate showered again and sat naked on the bathroom vanity as she blow-dried her hair and applied makeup. She changed back into her own white tee shirt and jeans and returned to the courtyard. She slid back the bolts and unlocked the door.

“A little memento,” she smiled as she handed James the blue thong.

James took it, looking a little bemused.

“And this is for you, Bel,” Kate whispered, pushing a key into Belinda’s hand.

An hour later and Kate was walking home with the belt once again pulled tight between her legs, but this time it felt sexy.