Unexpected Bonds
Copyright© 2026 by Dilbert Jazz
Chapter 4: The Third Wheel
Erotica Sex Story: Chapter 4: The Third Wheel - Step-siblings Sophia (29, struggling artist) & Julian (27, guarded coder) ignite buried desire in an empty Kansas City mansion over Thanksgiving. Vicious confessions lead to brutal degradation: squirting shame, face-painting cum, personal humiliations in parents’ bed, threesome with Riley as toy. Raw fucking against family portraits seals their twisted intimacy. No redemption—just honest ruin they crave.
Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa Mult Consensual Incest Brother Sister DomSub MaleDom FemaleDom Humiliation Rough Group Sex Anal Sex Facial Masturbation Oral Sex Squirting Caution Slow
Saturday morning broke cold and gray over the mansion, the kind of light that made everything look slightly bruised. Sophia woke in her childhood bed with the sheets twisted around her naked body, the faint crust of Julian’s dried cum still flaking on her lower back like a brand she hadn’t washed off. She lay there for a long minute, staring at the lavender walls she’d begged her mother to repaint when she was fifteen, feeling the ache between her legs and the deeper one in her chest. No regret. Just anticipation that tasted like metal.
She showered quickly—hot water pounding her skin, careful to avoid scrubbing the evidence from her back. Dressed in the bare minimum: black tank top, no bra, loose cotton shorts that rode up her thighs. Hair still damp, face bare except for the faint redness around her eyes from last night’s tears. She found Julian in the kitchen, already brewing coffee, sleeves rolled, looking calm in a way that made her stomach flip.
“Riley’s coming at three,” he said without preamble, pouring her a mug. “You direct. Every detail. But you don’t get to come until I say.”
Sophia took the coffee, fingers brushing his. “And if I beg?”
“You beg louder.”
Riley arrived at 3:07—knocking once, then letting themselves in with the spare key Sophia had texted them last night. Non-binary, mid-twenties, sharp cheekbones, swirling black ink tattoos crawling up both arms and disappearing under a fitted black tee. Short dark hair, pierced septum, smirk that said they’d seen worse than whatever this family could throw at them. They carried a small duffel—change of clothes, lube, a strap-on harness they didn’t bother hiding.
“Living room,” Sophia said, voice steady despite the pulse hammering in her throat. “Couch pushed back. Lights low. Red bulb in the lamp.”
They moved the furniture in silence—couch shoved against the wall, coffee table dragged aside, red bulb casting bloody shadows across the hardwood and the family photos still hanging on the far wall. Sophia stood in the center, arms crossed under her breasts, nipples already tight against the thin tank.
“Riley,” she said, “on your knees. Crawl to Julian. Choke on his cock like the eager little toy you are. Make it messy. Make it humiliating.”
Riley dropped without hesitation—hands and knees, crawling slow across the floor, eyes locked on Julian. They reached him, knelt up, and took his cock deep in one smooth motion—throat bulging visibly, eyes watering instantly, drool cascading down their chin in thick, shining ropes that pooled on the hardwood. Julian gripped their hair with both hands, fucked their mouth with short, brutal thrusts—gagging wet sounds filling the room, the red light turning spit glossy and obscene.
Sophia watched for a long beat, then straddled Riley’s face backward—ass toward Julian so he could see everything. She spread her cheeks wide with both hands. “Eat my filthy holes, you pathetic third wheel. Tongue my cunt, rim my ass, drink every drop I give you. Make me drip all over your worthless face while my brother skull-fucks you into next week.”
Riley dove in—tongue spearing Sophia’s pussy first, plunging deep, then sliding up to push inside her asshole, alternating with desperate, hungry laps. Sophia ground down viciously, clit dragging across Riley’s nose, tits swaying under the tank top. She reached back, slapped Riley’s cheek—light but stinging. “Harder, you useless slut. Service me properly or I’ll make you watch while we laugh at how pathetic you look covered in our mess.”
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