My boyfriend had been asking for months if we could do anal and I always refused. Anyone one evening, we're in bed, playing around a bit, and then I whisper that I'm ready. I got on all fours, arched my back, and lifted my ass. I felt him rub my asshole, lubricating me. He slid his cock right into my hole, and I told him I'd back off. I felt my ass slowly opening, feeling my asshole first slapping around his head. That was enough for me to feel his presence, and then I started pulling out further, taking more and more of him in, until finally, his entire cock was inside me. I admit it hurt a little at first, but once I got used to it, I kept slamming my ass into him until he filled my asshole. He said it looked amazing, watching the cum pour out and surround his penis.