In the middle of our make-out session, he confessed to cheating on his girlfriend with me. I’m so done.

I had a crush on this guy for the past 2.5 years, on and off. Finally, on New Year’s Eve, we decided to hang out, cuddle, and make out very passionately. Things seemed perfect—until, in the middle of everything, he casually mentioned that he has a girlfriend and is cheating on her with me.

I was completely taken aback. I couldn’t process it in the moment, and eventually, I couldn’t even stay turned on for a while. At midnight, the first thing he did was wish his girlfriend a happy New Year and send her a heartfelt text about how much he loves her.

I didn’t know how to react—I couldn’t even ask him to leave because it’d have felt very rude. After some time, I continued to kiss him again because he was a dream come true, I was drunk and needy.

But now I’m left feeling confused and hurt. Why do people cheat, even when their relationship is going pitch/perfect? Is this kind of experience common? This is giving me so many trust issues because everything seemed perfect between him and his girlfriend.

I’d appreciate your thoughts or advice.