First-time anal sex with girlfriend results in intense screaming and pain

After a hefty night of drinking, I found myself back at my girlfriend's place, ready to get down and dirty. I've been dying to give her a taste of anal, and she's been teasing me about it for weeks. So, as we started making out on her couch, I decided to take the plunge and slide my throbbing cock into her tight ass. The look on her face was a mix of pleasure and pain, but she never pulled away. Instead, she moaned louder, her body writhing underneath mine as I pounded her ass harder and harder. Her screams echoed through the house, but I couldn't stop myself. I was too far in, and the sensation was too good. As I felt myself reaching climax, I pulled out and covered her ass in a hot load of cum. The sight of her still screaming in pleasure was enough to make me hard again.