<human>: Can you provide a brief overview of the text?

My best friend (M22) and I started being more intimate, (yes, he made it out of the friend zone) for 3 months now. And I love him, on almost all levels, but I am have a major commitment phobia. He is well aware of it and has been going slow, however because I also have the sex drive of a 16 year old boy, sex is involved muddying the water of what is really going on. 

When things started to get intimate we sat down and had a talk about what the relationship is and means for us, and came to the conclusion that because there was a time limit (graduating college and both moving elsewhere) we weren't going to make it official and let whatever happens happen. 

He told me that after graduation he knew I would be the promiscuous person that I am and told me he didn't want to know about any endeavors until we were back to the friends that we were (He literally knows everything about my life).  

I went on a trip this last weekend and got wayyy to drunk and slept with a guy. I know drinking doesn't count for an excuse which is why I feel so guilty. I can't eat, sleep, think about anything other than what a horrible mistake I've made. In a very unfortunate way, it made me realize how much I want to be with this guy, how perfect he is for me, and how I just ruined it all by doing this. Is this cheating, and should I tell him?
<bot>: Did I (F22) cheat, and should I tell him (M22) if we are technically not in a relationship?