After a drinking party, my best friend's girlfriend and I decided to have a home drinking session because we missed the last train. It was just supposed to be killing time until the first train. But as I got nicely drunk, I reached out to my best friend's girlfriend! At first, she refused, but she was swept away by the atmosphere and accepted me, climaxing wildly! Perhaps it was the sense of betrayal towards her boyfriend (my best friend), but both of us were strangely excited and had super intense sex! And before we knew it, morning had arrived... The doorbell rang, and when I went to the entrance, I saw my best friend, who was worried about his girlfriend who hadn't returned home last night. I hurriedly hid her and lied to send him away. But when I thought it was over, I felt like I didn't want to let her go and had sex again. As expected, the sex was too compatible, and she completely fell... I'm really sorry... But I didn't think sleeping with my best friend and his girlfriend would be this exciting.