I told myself I was straight. Married, two kids, the whole fucking deal. But that night in the hotel bar, after too many drinks and a fight with my wife over the phone, this guy kept buying me rounds and talking shit about how a real man knows how to take cock. His name was Derek. Big hands, shaved head, arms like tree trunks. I laughed it off at first, called him a fag, but my cock twitched in my jeans every time he leaned close and said what he'd do to a tight hole like mine.
By midnight I was in his room, door locked, lights low. "Strip," he ordered. I hesitated, heart hammering, but my hands moved anyway. When my pants hit the floor my cock stood half-hard already, traitor that it was. Derek laughed low. "Look at that reluctant cock. Bet it wants this bad."
He shoved me onto the bed face down. I tried to roll away but he was stronger, pinning my wrists. Lube slicked cold over my hole and I grunted "No, man, I don't do this shit." He just pressed two thick fingers in, working them deep while I cursed and bucked. My cock swelled full against the sheets despite me. Every scrape of his knuckles made it leak.
"Shut up and take it," he growled, pulling his fingers out and replacing them with the fat head of his dick. I felt the blunt pressure, the burn as he pushed. "Fuck, no," I said, voice cracking, but my hips tilted back without my say-so. Inch by inch he sank in, stretching me open, owning me. My reluctant cock throbbed, dripping, every thrust hitting something inside that made my balls draw up tight.
He fucked me hard and steady, balls slapping, one hand fisted in my hair. "Tell me how it feels," he demanded. I bit the pillow, refusing, but the words spilled out anyway. "Big… too big… shit, don't stop." My cock rubbed the mattress with every slam, getting me closer without a single stroke. Derek reached under, wrapped his fist around it, and jerked rough and fast. "This cock's mine now. Gonna make it shoot while I breed you."
I came with a shout, ropes of cum soaking the sheets, hole clenching around him. He didn't stop, just kept pounding until he flooded me deep, hot and thick. When he pulled out I lay there shaking, cum leaking down my thighs, my spent cock still twitching like it wanted more.
Derek flipped me over, sucked me hard again, and rode my cock until I was begging to fuck him too. By morning I was on my knees, sucking him clean, tongue working every inch while he called me his new cumdump. My wife texted. I ignored it.

My reluctant cock had decided for both of us.