<human>: Hey, /r/relationship_advice. I've been so scared today, and I really need some help.

A little background first, I'm a 20 yr old woman, I live in California, and I've been dating a guy for about 5 months now.

So, the other night, I went to a party that one of my friends was going to. I told my boyfriend that I wouldn't drink, and he told me to have a good time. We danced a bit, and I did have a little bit to drink (which I'm not proud of), when I ran into an old friend of mine. Him and I used to have a bit of a thing back in high school, and it had been a while since we had stopped talking. We start talking, and we decide to leave the crowded party and go catch up.

Now at this time, sex was the last thing that was going through my mind. But after about an hour of talking, him and I had gone back to his place, and it just happened. Him and I were in bed together, and I was feeling great, but I was starting to feel terrible about halfway through it all. I kept thinking about my boyfriend, and how he'd feel about this, and how sweet he is, and how I didn't want to hear him. Towards the end, I had wanted him to stop, and I tried saying it at one point, but I was too tired and tipsy for him to hear. Finally, he finished, and he fell asleep nearly right after. I laid there for about 30 minutes crying a bit before I went back to sleep.

I woke up this morning before he did, got dressed, walked to the bus stop, took the bus home, and I've been holed up in my room all day. I made this throwaway because some of my friends know my reddit name, and I don't want them to know what happened to me. I need your help, guys. What do I do?

Give me the gist of the text in a nutshell
<bot>: An old friend from high school had sex with me. Now I feel terrible because I told my boyfriend I wouldn't be drinking