<human>: Can you provide a brief rundown of the text in within 3 sentences?

Hey, I'll try to make this really quick. I had a very good friend in high school (and middle school), but developed a crush on her when we were in tenth grade. She didn't feel the same and we drifted apart. She knows I still have very strong feelings for her, but I know she doesn't, so I leave her alone. After a while we start talking ocassionaly, but just as friends. We also see each other on most weekends (parties).

So there was a party last weekend to celebrate the birthday of this rich kid, who is also much better looking than me (not sure if that's important but whatever). I resent him (he has everything I wish I had). He's a good friend of hers, and I think she likes him. I was invited through another common friend.

Anyyyway, I meet her there, and we both hang out with the same people, but don't talk to each other other than to say "hi", but we start dancing and she suddenly whispers into my ear "I love you". I say "I love you too". We finish the song, she leaves me standing there, and goes to talk with her friends. About an hour later, she's drunk and trying to make out with the rich kid, but her friends stop her for whatever reason.

I really care for this girl. What should I do? If anything was unclear, let me know. English is not my native language, so sorry for any mistakes :P
<bot>: High school crush, who I still like, tells me she loves me after not talking to me for a long time. Proceeds to leave me alone and, get drunk, and try make out with dude I don't like.