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The Friend In Between

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Nick and Caitlin are married. She’s very vanilla. Nicks best friend Kate always checks on him and sees how they are doing.

Chapter 5: Chapter 5

The silence after Kate’s question was absolute, a high-pressure chamber where the only sound was the ragged rhythm of their breathing. Nick stood frozen between them, the key’s phantom warmth still on his palm, the cage a cold, central fact. Caitlin’s gaze, wide and liquid, held Kate’s. The teacher’s calm had evaporated, replaced by a feral, trembling vulnerability.

“What happens next,” Caitlin repeated, her voice a husk of itself. A strange, resolved smile touched her lips, fleeting and sad. “I show you mine.”

Her fingers went to the tie of her chamomile robe. The silk sighed open. She let it slide from her shoulders. It pooled at her feet like fallen cream.

Beneath it, she was naked.

And not.

A delicate lingerie set, black lace so fine it was nearly sheer, cupped her small breasts and hugged her hips. The straps were slender, the cut high on her thighs. It was a shocking contrast to her girl-next-door demeanor, a secret language written on her skin. Nick’s brain stuttered, failed to process. He had bought her lingerie before—soft pastels, sensible cotton—but she’d always fidgeted, said it felt like a costume. This was not a costume from a department store. This was intimate armor.

But the greater shock was lower.

Caitlin turned, slowly, presenting her back to them. She placed her hands on the vanity table, bowing her head. The lace thong back was a narrow string. And there, nestled between the perfect curves of her rear, was a sleek, metallic plug. Its jewelled base, a deep amethyst, winked in the lamplight against her skin.

Nick heard a sharp, punched-out sound. It came from him.

“My secret,” Caitlin said, her voice muffled, speaking to the wood of the vanity. “The one I packed away with the rest of it. I bought it online two years ago after a parent-teacher conference that made me feel completely invisible. I’ve worn it… sometimes. When you were at work late. When I needed to feel like I had a secret, too. Something just for me. Something that wasn’t… vanilla.”

She straightened up and turned back to face them, her cheeks flushed, but her chin lifted in defiance. Her hands trembled as she brushed hair from her face. She looked at Nick, then at Kate, awaiting judgment, awaiting collapse.

Nick could only stare. The woman before him was a stranger, a glorious, terrifying stranger he’d shared a life with for years. The cage, his rebellion, suddenly felt clumsy, obvious. Hers was a quiet, sustained subversion.

Kate had been perfectly still. Now, a slow, appreciative smile spread across her face. It wasn’t triumphant. It was recognizing a fellow traveler in a wasteland.

“Well,” Kate breathed, the word full of wonder. “Look at you.”

Caitlin hugged herself, the gesture making the black lace dig into her skin. “Your turn,” she whispered, the challenge clear.

Without a word, Kate hooked her thumbs into the waistband of her black yoga pants and pushed them down in one fluid motion. She stepped out of them, kicking them aside. Then she gripped the hem of her slate-grey crop top and pulled it over her head, tossing it onto the discarded pile.

She stood before them, and Nick’s understanding of the night shattered completely.

She wore the exact same lingerie set. The same fragile black lace, the same delicate straps. A matching set. It looked different on her—more assertive, a declaration rather than a confession. The lace contrasted starkly with the porcelain clarity of her skin, the fiery cascade of her hair.

“You…” Nick managed, his voice gone.

“I bought them,” Kate said, her tone matter-of-fact, though her eyes were blazing. “A pair. After our third ‘drink.’ After I knew what he was asking for. I thought… I don’t know what I thought. A symbol. A joke for myself. A question.” She looked at Caitlin. “I never imagined I’d get to ask it.”

Then she mirrored Caitlin’s movement exactly. She turned, placed her hands on the footboard of the king-sized bed, and bent over. The lace was a mere formality.

The plug she wore was larger, more substantial. A shimmering obsidian, its flared base a sophisticated black silicone. It was not a sporadic indulgence. It was part of her architecture.

“My secret,” Kate said, her voice slightly strained from the position, rich with a dark amusement. “I wear it most days. In court, during mergers, at the gym. A constant, private reminder that beneath the suit, I am… occupied. That I hold my own keys to my own chaos.” She stood up smoothly, turning to face them again, utterly unashamed. “A daily practice in containment.”

The two women stood facing each other in their matching black lace, their secrets gleaming under the soft light. The room, their marital sanctuary, had been utterly reconsecrated. It was no longer just Nick’s hidden life laid bare. It was a triptych of concealment.

Nick felt the ground give way. His wife, his keyholder. Both had been living in parallel dimensions of private desire, centimeters beneath the surface of their normal lives. His own act of rebellion seemed almost childish by comparison—a loud, external device versus their quiet, internal knowledge.

Caitlin was staring at Kate’s plug, then down at her own body, as if seeing it for the first time. A hysterical giggle bubbled in her throat. “We match.”

“We do,” Kate said, and she took a step forward.

“All this time,” Caitlin whispered, her eyes filling again, but now with a dizzying mix of betrayal and communion. “You both… I was sitting here feeling inadequate, feeling plain, and you were both… plugged in. In different ways.”

“And neither of us had the courage to tell you,” Kate said softly. She was close enough to touch now. “He told me. I told… this.” She gestured vaguely at her own body. “But we both left you in the dark. That’s the real sin.”

Nick found his voice, raw and shattered. “I’m sorry. I’m so sorry, Cait.”

Caitlin ignored him, her focus entirely on Kate. “What do we do with this?” she asked, gesturing between the three of them. “Now that all the secrets are out?”

Kate’s eyes, fierce and green, held Caitlin’s. “We negotiate. For real this time. No more separate runtimes.” She glanced at Nick. “The cage was his request. A need for structure. These,” she gestured to her own body, then to Caitlin’s, “are ours. Expressions of autonomy. A need for… fullness. They’re not the same. But they can coexist.”

She reached out, her movement slow, giving Caitlin every chance to recoil. Her fingertips brushed the jewelled amethyst base of Caitlin’s plug.

Caitlin gasped, a tiny, sharp intake of breath. Her whole body tensed, then shuddered.

“Do you want it to coexist?” Kate asked, her voice dropping to a hypnotic murmur. “Or do you want to take it out, put the robe back on, and spend the next six months in therapy trying to forget any of this happened?”

Caitlin’s answer was a movement. She leaned into Kate’s touch, just slightly. Her eyes fluttered shut.

Nick watched, his blood pounding in his ears. He was a spectator in his own life’s most pivotal scene. The dynamics had upended. He was the locked one, the petitioner. They were the empowered, the revealed. The key around Kate’s neck felt less like a symbol of his surrender and more like a single piece in a much larger, more complex board game whose rules were being written this very second.

Kate’s hand fell away. “We need to talk. All three of us. Not in a bedroom charged with shock. In the light.” She bent, picking up her yoga pants and top. She didn’t dress, just held them. “Kitchen table. Now. We make coffee. We sit. And we decide what, if anything, comes next.”

Caitlin opened her eyes. She looked at Nick, a world of confusion and a spark of something new in her gaze. She nodded, then bent to retrieve her robe. She didn’t put it on, just draped it over her arm, a flag of surrender or a banner of a new campaign, it was impossible to tell.

Kate walked out of the bedroom, her posture regal despite her state of undress. Caitlin followed, pausing at the door to look back at Nick, still rooted to the spot.

“Come on,” she said, and her voice held the faintest, most fragile note of invitation. “Your keyholder ordered a meeting.”

The kitchen fluorescents were a brutal shock after the lamplight’s golden lie. The artificial glare turned their skin lunar, highlighting goosebumps and the stark reality of their state. Kate moved first, a study in purposeful exposure, filling the electric kettle at the sink as if wearing nothing but lace in another woman’s kitchen was a Tuesday evening commonplace.

“Sit,” she said, not turning around. The command was softer now, an invitation layered with unspoken permission to refuse.

Caitlin pulled out a chair from the round oak table, the legs scraping loudly on the tile. She sat, back straight, placing her folded robe on the table before her like a shield. She didn’t try to cover herself. The black lace and its amethyst secret were fully on display, a vulnerability offered up for negotiation. Nick stood frozen in the archway, a visitor in his own home.

“Nick,” Caitlin said, without looking at him. Her voice was thin but clear. “Sit. Please.”

He moved stiffly, taking the chair opposite her. The cool wood bit into his thighs through his sweatpants. The cage felt monstrously present, a clumsy scaffold compared to their elegant, hidden jewelry.

Kate brought three mugs to the table, the mundane china clattering on the oak. She didn’t sit. She leaned against the counter, crossing her arms beneath her breasts. The obsidian base of her plug was just visible against the chair’s cane seat when she shifted. “Okay. Ground rules. We talk. We don’t leave. We say the true thing.”

“The true thing,” Caitlin echoed, a faint, bitter smile on her lips. “My husband is locked in a device for you. You and I are wearing matching plugs we bought independently. My true thing is I’m equal parts heartbroken and… wildly turned on. And I don’t know what to do with either.”

Nick flinched. The raw admission hung between them, ugly and beautiful.

“My true thing,” Kate said, her gaze steady on Caitlin. “Is that I said yes to him because I wanted the control. But I’m realizing I wanted a connection I couldn’t name. To him. To… the idea of his marriage. To you.” She swallowed, her throat working. “It was sick and selfish and I did it anyway.”

The kettle whistled, a screaming punctuation to the confession. Kate turned, busying herself with pouring. The steam rose around her, a temporary veil.

“My turn,” Nick said, his voice rough. They both looked at him. “I wanted the noise to stop. I wanted to want my wife without the… the static of endless fantasy. I went looking for an off-switch. I didn’t expect to start a fire.”

Kate brought the mugs over, setting them down. The rich smell of coffee did nothing to cut the tension. She finally sat, completing the triangle. Three mugs, three secrets steaming between them.

A long, silent minute passed. Caitlin traced the rim of her mug with a fingertip. “So what’s the negotiation?” she asked, finally looking at Kate. “He stays locked? You keep the key? I just… live with it? Watch you two have this… thing?”

“No,” Kate said firmly. “That was the old protocol. It’s void. We’re writing a new one. Right now.” She took a sip, her eyes steady over the mug’s edge. “It starts with transparency. Actual transparency. Not metaphors. Not hardware and software.”

Caitlin’s gaze drifted down Nick’s body, then back to his face. “Then let’s see it,” she said, her voice gaining a strange, clinical calm. “All of it. No more layers. If we’re doing this, we start naked. All of us.”

Nick’s breath caught. Kate set her mug down with a precise click.

“He’s the only one in clothes,” Caitlin continued, her logic glacial and inarguable. “It’s his device. We’ve seen each other’s. It’s only fair we see his. Really see it. Understand what he asked for.”

Kate considered this, then gave a single nod. “That’s fair.”

“Nick,” Caitlin said, turning her teacher’s gaze on him. It wasn’t a command from a keyholder. It was a request from a partner, edged in heartbreak and a desperate need for full disclosure. “Take off your clothes. Let us see.”

His hands felt numb. The room was too bright, too cold. He stood, the motion clumsy. He pushed his sweatpants and boxers down in one graceless motion, stepping out of them. He stood before the two women he loved, exposed in every possible way. The cold steel of the cage was a glaring, artificial interruption on his body, a stark contraption against skin.

“Sit,” Kate said gently.

He sank back into the chair, the cold seat a shock. Caitlin and Kate both pushed their chairs back, the screech of wood on tile grating. They came around the table, not as a united front, but as two separate investigators drawn to the same puzzling artifact.

They knelt on the kitchen tile before him, a surreal and breathtaking tableau. The lace, the plugs, their focused expressions. The fluorescent light gleamed off the cage’s polished metal.

Caitlin reached out first. Her fingertips, cool from her mug, brushed the steel ring at the base. She inhaled sharply. “It’s so… cold,” she whispered.

“It’s medical grade steel,” Nick heard himself say, the engineer dissociating. “The lock is a brass barrel. That’s what the key fits.”

Kate leaned in, her red hair falling over her shoulder. Her examination was more analytical. “The fit is correct? No pinching?”

“No. It’s… it’s secure.”

Caitlin’s touch traveled, a feather-light tracing of the bars. Her brow was furrowed, not in disgust now, but in intense concentration. “And this… does what, exactly? It just… holds him?”

“It prevents erection. It removes the autonomy. The physical manifestation of the psychological surrender,” Kate explained, her voice low and even. “It’s a constant reminder. A discipline.”

“It looks uncomfortable,” Caitlin murmured.

“It’s meant to be,” Nick said. “A comfortable cage isn’t a cage. It’s… jewelry.” His eyes flicked to the amethyst nestled between her own legs, then away.

A strange, heavy silence settled over the kitchen, broken only by the hum of the refrigerator. The two women knelt, studying the mechanics of his chosen restraint. Caitlin’s earlier tears were gone, replaced by a deep, consuming curiosity. Kate’s expression was unreadable, a blend of professional assessment and something far more personal.

Caitlin sat back on her heels, her gaze lifting from the cage to Kate’s face. Her eyes traveled over Kate’s kneeling form, the confident set of her shoulders, the fall of her hair, the black lace against pale skin, the dark jewel she wore. A flush spread up Caitlin’s chest and throat.

The question, when it came, seemed to fall from her mouth of its own volition, unbidden and utterly raw, stripping away the last pretense of clinical examination.

“Can I taste you?”

The words hung in the air, a fragile, shimmering hook. The hum of the refrigerator seemed to grow impossibly loud. Nick stopped breathing. He watched Kate’s face, saw the professional detachment shatter like glass.

A tremor went through Kate’s kneeling form, starting deep within her core. Her green eyes, fixed on Caitlin, widened then darkened, the pupils swallowing the jade. Her breath hitched, a ragged, wet sound. She swallowed hard, her throat working. The calculated calm she’d worn like a suit melted, revealing a raw, pulsing hunger beneath.

“Yes,” Kate breathed, the word barely more than an exhalation. It carried a weight of surrender he’d never heard from her. “You may.”

She didn’t move, just held Caitlin’s gaze, her own burning with a fierce, unlocked need. Then she slowly, deliberately, turned her head toward Nick. Her voice dropped, gaining a hard, authoritative edge that cut through the kitchen’s stillness.

“But he watches,” she said, the command absolute. “He doesn’t move. He doesn’t touch himself. He sits there in that chair, in that cage, and he watches every second.”

Nick’s blood roared in his ears. The steel felt like it was searing into his skin, a brand of enforced stillness. He gave a tight, jerking nod, incapable of speech.

Caitlin’s response was a soft, almost inaudible whimper. She looked from Kate’s intense stare back to Nick, her own face a mask of terrified desire. This was her request, her negotiation, and the terms were being set. She licked her lips, a nervous, unconscious gesture.

Then she moved.

It wasn’t graceful. It was awkward, urgent. She shifted on her knees on the cool tile, closing the small distance between them. Kate remained perfectly still, a statue offering herself, her hands braced on her own thighs. Caitlin’s hands hovered for a moment, then she placed them tentatively on Kate’s knees. She leaned forward, her blonde hair cascading to brush Kate’s skin.

She hesitated, her mouth inches from the dark lace. She looked up, one last question in her eyes.

“Now, Caitlin,” Kate whispered, her voice rough with want.

Caitlin closed her eyes. She pressed her face into the black lace, her nose nudging the sleek silicone base of the obsidian plug. She inhaled, a deep, shuddering breath. Then her mouth found its target through the delicate fabric.

A low, guttural moan ripped from Kate’s throat. Her head fell back, the tendons in her neck standing in stark relief. Her fingers clenched into fists on her thighs, knuckles white.

Nick watched, mesmerized and agonized. He saw the flutter of Caitlin’s eyelids, the frantic movement of her jaw beneath the lace. He saw the way Kate’s entire body bowed, a live wire arching into the contact. The scent, musky and intimate, reached him across the space, a torture and a revelation. He ached, a deep, hollow throb that resonated against the unyielding steel. His hands gripped the sides of the wooden chair, the grain biting into his palms.

Kate’s hand shot out, not to push Caitlin away, but to weave into her blonde hair. Her grip wasn’t gentle. It was possessive, guiding. She tugged, just slightly, adjusting the angle. “Yes,” she hissed. “Just like that. God.”

Caitlin responded to the guidance, a muffled sound of encouragement escaping her. Her own hand came up, fumbling at the damp lace. She pulled it aside, finally exposing the flushed, glistening skin beneath. She didn’t pause. She dove back in, her tongue finding slick, heated flesh.

Kate cried out, a sharp, unvarnished sound that echoed off the kitchen cabinets. Her other hand flew to her own mouth, biting down on her knuckles. Her hips began to rock, a tiny, desperate rhythm against Caitlin’s face. The obsidian plug shifted with the motion, a dark, wet glint.

Nick was a prisoner in the best and worst way. Every gasp, every lick, every tremble from Kate was a spike of sensation that had nowhere to go, echoing in the hollow space the cage enforced. He saw his wife, his sweet, vanilla wife, lost in the act of tasting another woman. He saw his keyholder, the epitome of controlled power, utterly unraveling. He was the axis they spun around, the fixed, silent point.

“Don’t stop,” Kate begged, her voice breaking. “Please, don’t stop.”

Caitlin’s answer was a renewed fervor, her movements becoming more confident, more hungry. One of her hands slipped around to grasp Kate’s hip, pulling her closer, anchoring her. The sound was obscene and beautiful, a wet, rhythmic music in the sterile kitchen light.

Kate’s body began to tighten, a coil winding to its breaking point. Her breaths came in short, sharp pants. “I’m… Caitlin, I’m going to…”

She didn’t finish the sentence. A full-body shudder seized her, violent and magnificent. Her back arched impossibly, a silent scream etched into every line of her body. The hand in Caitlin’s hair held her fast, pressing her face in deep as wave after wave of sensation visibly racked her. It seemed to last forever.

Slowly, the tremors subsided. Kate’s grip on Caitlin’s hair softened, her fingers going lax. A profound, boneless stillness settled over her. Caitlin pulled back slowly, her chin slick and shining. She looked dazed, her lips swollen, her eyes glazed with a stunned wonder. She wiped her mouth with the back of her hand, never breaking the gaze she held with the now-limp woman before her.

For a long moment, there was only the sound of their labored breathing. Kate’s eyes finally focused on Caitlin. A slow, sated, utterly real smile touched her lips. It held none of her earlier calculation.

“Well,” Kate whispered, her voice hoarse and full of awe. “That was a new negotiation tactic.”

A choked laugh burst from Caitlin, half-sob, half-giggle. She slumped back onto her heels, looking from Kate’s blissful face to Nick’s stunned, agonized one. The reality of what she’d just done, what she’d just enjoyed, crashed into her. Her hand flew to her own mouth again, but this time to stifle not a moan, but a surge of overwhelming emotion.

Nick finally unlocked his hands from the chair. He leaned forward, the cage a searing reminder of his place. “Cait,” he said, his voice shattered.

Kate’s gaze slid to him. The sated softness in her eyes hardened, just a fraction, back into the keyholder. She saw his pain, his arousal, his utter fixation. She saw the result of her command to watch.

“Good,” she said, the single word layered with meaning. She drew a deep, steadying breath and pushed herself to her feet, her legs visibly unsteady. She didn’t cover herself. She looked down at Caitlin, still kneeling on the floor. “Your turn.”

Caitlin blinked up at her, confusion clouding her post-climactic haze. “My… what?”

“You asked for a taste. You took.” Kate’s voice was gentle but firm. “That’s only half the dynamic.” She extended a hand to help Caitlin up. “Now we see what you want. With him watching.”

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