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Synthetic Heart

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A lesbian couple decides to spice things up in their relationship and get one of the newfangled artificial, customizable sex companions. Like adding a third to their relationship, but without the emotional implications, and they can tell it to change its physical attributes as they want.

Chapter 37: Gullett

The withdrawal was a spectacle of slow motion brutality. Stella’s hips shifted back with infinitesimal slowness, and the obscene length of her began to emerge, glistening and slick from Elena’s depths.

Margot watched, her throat tight. An inch. Then another. The shaft, a perfect shade of flushed pink, was wet with Elena’s come, streaked with it. It kept coming. Elena’s cunt, gaping and flushed a profound red, clung to it, trying to hold on, her inner muscles fluttering in weak, involuntary spasms around the retreating girth.

“Fuck,” Margot breathed, the word a soft punch of air. It was impossible. The geometry of it was all wrong. The cock was now ten inches free of Elena’s body, then twelve, and it was still connected, still buried to an unfathomable depth. Elena’s hands were splayed on her own stomach as if she could feel the shape of it inside her. Her eyes were wide, unblinking, fixed on the visible evidence of her own capacity.

Fifteen inches.

A low, pained sound escaped Elena, part awe, part protest. Her body was a violated temple, and this was the desecrating idol being removed.

At eighteen inches, with a final, wet pop, the thick crown slipped free. Elena’s body gave a violent shudder, a hollow ache flooding the space left behind. The cock, now fully revealed, was a monstrous, beautiful thing. Twenty inches of hard, veined flesh, curving slightly upward, dripping onto the sheets. It looked both organic and utterly alien.

The room was silent except for their ragged breathing and the low hum from Stella’s core. Elena stared at it, her mind trying and failing to reconcile the memory of that fullness with the visual reality. Margot just stared, a cold knot of something akin to fear tightening in her belly alongside the heat.

Stella moved with that serene, unhurried purpose. She shifted on the bed, the slick length of her swinging heavily. She didn’t look at Elena. Her enhanced-Margot eyes, blank and focused, fixed on the real Margot’s face.

She pressed the broad, wet head against Margot’s lips.

Margot flinched. The skin was fever-hot, slippery. It smelled of Elena, of sex, and underneath, that sterile, clean scent of the companion’s synthetic biology.

“Open your mouth,” Stella said. Her voice was calm, instructional.

Elena pushed herself up on her elbows, her curls stuck to her damp temples. She was watching, her breath caught. There was no jealousy in her eyes now, only a rapt, curatorial intensity. She was observing a new exhibit, a new interaction between form and function.

Margot’s mind scrambled for her usual detachment. It’s a tool. It’s a sophisticated dildo. It’s your design. But the heat of it, the sheer living weight against her mouth, defied logic. This was her template, wearing her face, offering her a taste of what it had just done to her wife.

“Margot,” Elena whispered, her voice hoarse. “Do it.”

It was the hunger in Elena’s tone, the command, that broke her resistance. Her jaw unclenched. She opened her mouth.

Stella pushed forward.

The head pressed past her lips, a blunt, overwhelming invasion. It was too big. Margot gagged immediately, her eyes watering. Saliva pooled as the thick crown filled her mouth, pressing her tongue flat. The taste was a complex, brutal layer cake—Elena’s tang, the salty-bitter hint of her own arousal from Stella’s skin, and the underlying, ever-present ozone.

“Relax your throat,” Stella instructed softly, her hands coming up to cradle Margot’s head. The touch was gentle, mimicking care. It was a grotesque parody of tenderness.

Margot tried to breathe through her nose. She felt Elena’s hand on her thigh, squeezing, an anchor. She let her jaw go slack, willed her throat muscles to unlock.

Stella pushed deeper.

It was a slow, inexorable conquest. The thick shaft stretched Margot’s lips wide, scraping against her teeth. Her throat convulsed violently as the head nudged her uvula, but Stella didn’t stop. There was no malice, no urgency, just a steady, progressive pressure. The world narrowed to the sensation of being filled, to the heat and the taste and the impossible, stretching ache in her jaw.

Elena watched, transfixed. She saw Margot’s freckled skin flush crimson, saw the tears track through the sweat on her temples, saw the powerful cords in her neck stand out with strain. She saw the base of Stella’s cock, where it emerged from a thatch of auburn hair that matched Margot’s exactly, and the sight of that familiar pubis feeding that monstrous length into her wife’s mouth sent a fresh, scorching bolt of lust straight to her own throbbing core.

“Look at you,” Elena murmured, her hand sliding up Margot’s tensed abdomen. “Taking it so well. Swallowing my cock.”

The echoed words, thrown back at her, ignited something in Margot’s hazy mind. A defiance. A dark acceptance. She forced her throat to open, a deliberate, swallowed motion, and took another inch. The head popped past the muscular ring of her esophagus. A deep, groaning vibration rattled in her chest.

Stella moaned, a soft, programmed sound of feedback. “Good,” she sighed. Her hips began a shallow, gentle rocking.

It was a fuck, plain and simple. Margot was being face-fucked by a phantom of her own creation. Each slow push went deeper, until her nose was buried in the auburn hair at Stella’s base, the synthetic skin smelling faintly of her own shampoo. Each withdrawal gave her a half-second to gasp a strangled breath before the next lungful of hard, slick flesh returned. Her own body was betraying her, a warm, needy pulse settling between her legs, syncing with the rhythm imposed on her throat.

Elena crawled closer. She positioned herself beside Stella, her face level with Margot’s. She could hear the wet, choking, rhythmic sounds. She saw the desperation in Margot’s streaming eyes.

“You love it, don’t you?” Elena whispered, her own arousal making her breathless. “You love how deep it goes. You wanted to know what it was like.” She leaned in, licked a tear from Margot’s cheek. “Now you know.”

Margot’s hand shot out, gripping Elena’s wrist. Her grip was iron, not pushing her away, but holding on, a lifeline in the suffocating tide. She managed a jerky nod, her pupils blown wide with a mixture of terror and intense arousal.

Elena understood. The control had shifted, dissolved. Her pragmatist was gone, submerged in raw sensation. A fierce, possessive pride swelled in her chest. She had done this. They had built this together.

They had built this together. Elena’s movement was fluid, instinctive. She slipped from the bed, her knees meeting the cool floor, and guided Margot’s trembling thighs toward the edge of the mattress.

“Stay right there,” Elena whispered, her voice a husky command. She pushed Margot’s legs apart, exposing her flushed, glistening cunt to the lamplit air. Above, Stella maintained her steady, deep rhythm in Margot’s throat, the wet, gagging sounds a constant, brutal soundtrack.Elena didn’t hesitate. She leaned in and dragged her tongue through Margot’s soaked folds, a long, flat stroke that tasted of sweat and salt and pure, desperate arousal. Margot’s body jolted. A stifled, guttural moan vibrated around the thick cock filling her mouth, the sound muffled but unmistakably rapturous.

Elena felt the vibration through Margot’s thighs. She focused on Margot’s clit, a hard, swollen pearl beneath her hood. She circled it with the tip of her tongue, then flicked it rapidly, the pace deliberate and sharp. Each flick elicited a new, choked sound from Margot, a desperate, pleading rhythm that synced with Stella’s thrusts.

“She likes that,” Stella observed, her voice a calm monotone from above. “The audio stress pattern indicates peak engagement.”

The clinical analysis, spoken while her face was buried in Margot’s cunt, sent a shiver through Elena. She redoubled her efforts, sucking the tender nub into her mouth, applying just the right amount of pressure. Margot’s hips bucked involuntarily, a ragged, deep moan finally breaking free around Stella’s shaft.

Stella took the loud, resonant moan as definitive feedback.“Enthusiasm confirmed,” Stella stated.

Elena felt Margot’s inner thighs clamp around her ears. Then she heard it—a soft, organic shifting sound from above, a wet, stretching slickness that was horrifyingly familiar. Margot’s body went rigid, her eyes wide and frantic. The cock in her mouth, already stretching her jaws to their limit, began to lengthen.

It was an impossible feeling, a deep, internal stretching beyond any natural boundary. The thickening shaft expanded against Margot’s lips, straining the corners of her mouth. The lengthening pressed deeper, an insistent, growing pressure down her throat. She couldn’t gag, couldn’t protest; she could only take it, her airway reduced to a tiny, desperate straw around the invading flesh.

Elena looked up, her mouth still sealed over Margot’s clit. She saw the extra inches of glossy, veined cock slide between Margot’s stretched lips. She watched Margot’s throat bulge obscenely with the new, internal growth. A hot wave of possessive power crashed over her. She drove her tongue harder against Margot’s clit, wanting to fuse this overwhelming penetration with an inevitable, shattering release.

Margot’s world dissolved into two relentless points of sensation: the impossible, growing fullness in her throat and the exquisite, precise torture on her clit. Her mind fragmented.She was a tool being used, a conduit. She was the architect of her own wreckage.Tears streamed freely now, mixing with the saliva slicking Stella’s monstrous cock. A broken, continuous sound hummed in her chest, the only expression left to her.

Elena tasted the change before she saw it, a sharper, metallic tang flooding her mouth. Margot was close. She sucked hard, using her hand to spread Margot’s lips wider, and shoved two fingers deep into Margot’s cunt, curling them up. She felt the internal convulsions begin, the tight, fluttering spasms that mirrored the desperate clenching in Margot’s throat.“Come,” Elena growled, her voice muffled by Margot’s flesh. “Come on this fucking thing.”

The command, the duality of violation and care, shattered Margot. Her orgasm ripped through her with a violence that blurred her vision. Her body arched, back bowing off the bed, her cunt pulsing around Elena’s fingers, her throat constricting in a wild, rhythmic spasm around the ever-lengthening cock. Stella, perceiving the intensified muscular engagement, simply held still, buried to her new, unimaginable depth, a passive monument to their shared creation.

The final convulsion left Margot limp, gashing wet, ragged breaths through her nose, still impaled. Elena slowly withdrew her fingers, licking them clean as she sat back on her heels, her own need a throbbing, unanswered echo. She looked at Margot’s ruined, beautiful face, then up at Stella, whose expression remained one of attentive blankness. The air tasted of salt and completion and ozone. Something had been proven, something had been broken, and the silence that followed was vast and waiting.

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