I never expected my girlfriend to turn me into a cock-hungry bitch, but once she started, there was no going back. It began one night after too many drinks when she admitted she got wet thinking about me on my knees for another guy.

"You'd look so fucking hot with a thick cock stretching your mouth," she said, her hand already in my pants. I laughed it off at first, but the idea stuck. A week later she brought home her friend Marcus, tall, built, and already hard under his jeans. She didn't waste time. "Strip," she ordered me, and I did, cock twitching under her stare. "Now get on your knees and show Marcus what that mouth can do."
Marcus pulled out his dick, heavy and veined, and I hesitated only a second before she pushed my head forward. "Suck it, bitch," she whispered right in my ear. The head slid past my lips, salty and thick, and I gagged as he pushed deeper. She stroked my hair like I was her pet. "That's it, take it all. You're my little cock bitch now." I bobbed faster, spit running down my chin while she watched and fingered herself. Marcus groaned and fucked my throat harder, calling me a good slut. When he pulled out and painted my face, she licked some off my cheek and kissed me deep, sharing the taste.
After that night it became our routine. She started inviting guys over regularly, lining them up while she directed every move. "Hands behind your back," she'd say, tying my wrists with her scarf. "Open wide and let them use that hole." One after another they fed me their cocks, some thick, some long, all of them rough once she told them I liked it nasty. She kept a running commentary, filthy and constant. "Look at you choking on that dick like you were born for it. My boyfriend the cock bitch. Say it." I mumbled around whatever shaft was in my mouth, "I'm your cock bitch," and she came every time I did.
The first time she had one fuck me was the real turning point. She prepped me herself, working two lubed fingers into my ass while she jerked me slow. "Relax, baby. You're gonna take every inch and thank him." Marcus was back again, and she guided him behind me on the bed. The blunt pressure at my hole made me tense, but she slapped my ass hard. "Push back on it, bitch. Show him how much you want it." The head popped in and I yelled, the burn mixing with a dark, hot pleasure as he sank deeper. She held my face and made me look at her while he started thrusting. "Tell me how good that cock feels in your ass." "So fucking good," I gasped, and she smiled like she'd won.
From then on she owned me completely. She bought me a collar with a tag that read "GF's Cock Bitch" and made me wear it during every session. Guys would grab the ring and yank me onto their dicks, pounding my throat or bending me over the couch so they could rail my ass while she filmed on her phone. "Deeper, bitch," she'd coach from the chair, legs spread, rubbing her clit in time with their strokes. "Milk that load. You don't get to come until they do." I'd end up wrecked, cum leaking from both holes, and she'd reward me by riding my face until she squirted.
The filthier it got, the harder I stayed. One weekend she brought two guys at once. I spent the whole night getting passed between them, one cock in my mouth while the other stretched my ass, then switching. She sat on the edge of the bed directing traffic. "Flip him over. I want to see his face when you breed him." They took turns dumping loads inside me, and she made me push the mess out onto her fingers so she could feed it back to me. By the end I was hoarse from moaning, ass sore and used, but I begged for more every time she asked if I was done.
Now it's just normal. She picks the guys, sets the rules, and I obey because nothing gets me off like being her cock bitch. Last night she had me on all fours again, a new guy slamming into me while she whispered, "This is who you are. My dirty little gay fucktoy." I came untouched, shooting across the sheets, and she laughed softly. "Good bitch. Clean it up and get ready for round two." I always do.