The Cuckold Algorithm - Cover

The Cuckold Algorithm

Copyright© 2026 by VelvetQuillX

Chapter 14: Anal Training & Pegging Night

Erotica Sex Story: Chapter 14: Anal Training & Pegging Night - Emma installs LustLink for “spicy couple fun.” The app secretly scans Alex’s hidden cuckold porn and turns their marriage into a living nightmare — and fantasy. Her dominant Black boss Marcus becomes Bull #1. What starts as flirty texts spirals into blackmail, chastity, public humiliation, sissy training, raw breeding, and permanent lock. By the final chapter Alex is collared and serving while Emma glows pregnant with another man’s child.

Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa   Mult   Blackmail   Coercion   Reluctant   Heterosexual   CrossDressing   Fiction   Science Fiction   Cheating   Cuckold   Slut Wife   Wife Watching   Wimp Husband   BDSM   DomSub   FemaleDom   Humiliation   Rough   Gang Bang   Group Sex   Interracial   Black Male   White Female   Anal Sex   Cream Pie   Double Penetration   Exhibitionism   Facial   Lactation   Oral Sex   Pegging   Pregnancy   Sex Toys   Squirting   Tit-Fucking   Voyeurism   Foot Fetish   Public Sex   Size   Small Breasts   AI Generated  

Wednesday evening wrapped the apartment in a hushed, expectant calm, the kind that made every small sound feel amplified. The living-room lamps cast low, amber pools across the floor, and the faint hum of the city outside the windows seemed to hold its breath. Emma stood in the center of the room wearing only a short silk robe that barely reached mid-thigh, the tie already loosened so the fabric gaped open at her breasts and the smooth line of her stomach. Her auburn hair fell loose over one shoulder, still damp from the shower she had taken alone to prepare. Marcus had arrived ten minutes earlier, shedding his jacket and rolling his sleeves to the elbows, his presence turning the familiar space into something charged and new.

Alex knelt a few feet away on the thick rug, collared and caged, the pink steel tube gleaming under the lamplight. The black lace panties from earlier in the week had been replaced tonight with a sheer pair that left nothing to the imagination, the front panel already darkened by the slow, steady leak that had started the moment the app pinged its command for the evening. He kept his hands on his thighs, palms up, exactly as the latest notification had instructed. The LustLink dashboard glowed on Emma’s phone where it rested on the coffee table, its screen displaying a live timer counting down to the first phase: Anal prep protocol initiated. Vibration level 3.

Marcus stepped behind Emma and slid the robe from her shoulders, letting it pool at her feet. His large hands settled on her waist, thumbs stroking the small of her back in slow circles. “Tonight we open something new,” he said, voice low and steady. “And your husband is going to help every step of the way.”

Emma’s breath caught as Marcus guided her to the wide ottoman in front of the couch. She bent forward, knees sinking into the cushion, ass presented high. The app chimed softly, and a small vibrating plug nestled between her cheeks began to pulse. Alex crawled closer without being told, a bottle of thick, clear lube in his hands. He drizzled a generous line along the cleft of her ass, watching it glisten under the light, then used two fingers to spread it slowly, circling the tight ring with careful pressure. The first soft, wet sound filled the room as his fingertip pressed inside—gentle, patient, opening her for what was coming.

Marcus knelt behind her, cock already freed and heavy against her thigh. He rubbed the thick head through the lube Alex had applied, letting the slick glide tease her entrance. “Ready?” he asked, not of Emma but of the app itself. The screen flashed green. He pushed forward.

The stretch was audible—a slow, deliberate pop as the wide crown breached her, followed by a low, drawn-out squelch of lube and yielding muscle. Emma gasped sharply, fingers curling into the ottoman fabric. “Oh ... fuck, that’s thick.” Her voice trembled on the edge of discomfort and something deeper, hungrier. Marcus held still, letting her adjust, the app’s plug still buzzing inside her pussy to keep her flooded and open. Alex stayed right there, face inches from the point of connection, watching every millimeter disappear into her. He added more lube with trembling fingers, spreading it around the stretched rim so the glide stayed smooth.

Marcus began to move—shallow at first, then deeper, each thrust accompanied by fresh, filthy sounds: the wet drag of withdrawal, the soft push back in, the faint creak of the ottoman as Emma rocked forward. “It feels ... different,” she moaned, pushing back to meet him. “Fuller. Hotter.” Her words dissolved into a broken sigh as he bottomed out, balls pressed tight against her. “God, it feels even better than my pussy right now.”

Alex’s cage throbbed violently. He could see the way her ring gripped Marcus, the skin pulled taut and shiny with lube. The sight burned into him, the denial turning every heartbeat into a dull, aching pressure that made fresh pre-cum seep through the lace.

 
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