FUCKING MY STEP BRO-IN-LAW 1

I’d been married to Emily, my wife, for eight years, but nothing could kill the dark, constant ache I felt for her younger stepbrother, Liam. It started six years ago at a family cookout—Liam had just turned eighteen, all lean swimmer’s muscle, sun-bleached dark hair falling into hazel eyes that held a lazy, knowing spark. No blood relation to Emily, thank God, but he was family. Still, I couldn’t stop staring: the way his wet swim trunks clung to thick thighs and the heavy outline of his cock, the easy flex of his biceps when he tossed a football, the low rasp of his laugh that hit me straight in the balls. Night after night I’d lock myself in the bathroom, fist wrapped tight around my dick, picturing him on his knees, those full lips stretched around me, and come so hard I’d see stars—then drown in guilt. Emily was everything—warm, funny, loyal—but Liam was the poison I craved.

When he called last week from college saying he needed a place to crash for three weeks of break, Emily lit up. “Of course, little bro! Jack and I have the spare room ready. We'd even pick you up”

I nodded like it was nothing, but inside my pulse was pounding harder. Three weeks sharing walls with him? I was already half-hard just thinking about it.

Pickup day arrived and you wouldn't know it? Emily got called into an emergency client meeting. “Babe, can you grab Liam alone? This could seal the promotion.” She kissed me quick and left. My heart skipped multiple times at the word. But it was supposed to be nothing, just a random brother-in-law picking his wife's step brother up from college, but my wild, crazy, forbidden obsession made my mind spiral and my heart drum at the thought of picking my step brother-in-law up alone.

I drove the two hours to campus with my hands white-knuckled on the wheel, cock already thickening at the thought of being alone with him in a car for hours.

He was waiting outside the dorms, waving with that crooked grin. Faded gray tank stretched tight over his pecs, black basketball shorts slung low enough to show the sharp V of his hips and a dark happy trail. “Jack! Thanks for coming, man.” He pulled me into a hug—hard chest slamming mine, warm skin and clean sweat and that sharp citrus cologne flooding my head. I held on too long, feeling the solid length of him press against my thigh through thin fabric.

“No problem,” I muttered, voice already rough. I loaded his duffel into the SUV trunk while he slid into the passenger seat, legs spreading wide, one knee brushing mine as he buckled up.

“More time to catch up,” he said, smiling slow. Those eyes held something dangerous. I told myself I was imagining it.

The drive started normal—classes, dorm horror stories, my marketing job—but the air turned thick fast. Every time he laughed he’d grip my forearm, thumb stroking the sensitive skin inside my wrist. When he reached to adjust the vent his knuckles grazed my thigh—deliberate this time, lingering. I shifted, trying to hide the fat ridge straining my jeans.

Halfway home traffic bogged down. Liam stretched, arms overhead, tank riding up to expose a tight strip of abs and the dark line of hair arrowing down. “Fuck, my back’s killing me from hauling boxes.” He twisted, giving me a clear shot down his shirt—flat stomach, dark nipples pebbled from the AC. My mouth flooded with saliva. My palms suddenly went slick with sweat. My heart drummed wildly against my chest.

“Want me to pull over? Stretch your legs?” I sounded wrecked.

He bit his lower lip, eyes flicking to my lap where I was obviously hard. “Yeah. Rest area’s coming up.”

I took the exit, rolled into a deserted, tree-shaded lot. It was midday, so it was empty. Perfect. I killed the engine. We stepped out. Liam leaned back against the SUV, rolling his shoulders, tank clinging to sweat-slick skin.

“Feels good,” he said, voice low. “Thanks, Jack.”

I stepped in too close, breathing him in. “You’ve… changed. Filled out. Your biceps. Everything."

His gaze dropped to my mouth, then lower. “Yeah? Emily still calls me the baby brother.” He moved closer, palm flat on my chest, feeling my heart slam. “But I’m not a baby anymore, am I?”

The air crackled. Six years of suppressed want exploded. “Liam, we—”

But he kissed me—hard, claiming, lips crashing. I froze in one heartbeat, then groaned and kissed back, hands clamping his waist, yanking him flush. His tongue shoved in, hot and demanding. Guilt screamed, then drowned. This was wrong—Emily’s brother, my wife's family—but fuck, it felt like destiny.

We stumbled around the SUV. My back hit the door; he ground against me, thick cock pressing my thigh through his shorts. “Jack,” he rasped against my mouth, “I’ve wanted you since I was old enough to know what hard meant. I have always seen you looking.”

I spun us, pinning him to the metal. Mouth on his neck, sucking a bruise. He gasped, hips bucking.

“We shouldn’t… but Fuck, Liam.”

“Don’t stop.” He dragged my shirt off; I ripped his tank over his head. Lean, cut muscle—dark nipples tight. I latched onto one, sucking hard while my hand rolled the other. He arched, fingers knotting in my hair. “Fuck—bite it.”