While hanging out at home with my best friend and his girlfriend, I got really drunk and my best friend fell asleep. So, it was just me and his girlfriend drinking together. The atmosphere started to get really good, so I decided to go for a kiss, and she didn't seem to mind. I thought, "This could work!" But just before things were about to go further, she suddenly stopped me, saying, "No! I can't betray him!" However, she let me rub against her, and when I did, she got wet between her legs and I slipped right in! Once I was inside, I couldn't stop, and in the end, I had unprotected sex with her multiple times right next to her sleeping boyfriend.