OK well I was was 2 my best friend she tells me the stuff that's going on in chicago because I'm in vacation an I have a girlfriend an my friend told me they went to some party on Sunday an my girlfriend got really messed up drinking an ma friend told me me that she went to go get some more drinks an she told her guy friend that she trust to take my girlfriend to go get a drink but when she went to go look for my girlfriend she was in the bath room with that guy but they were in there for a long time an when they came out a fight broke out with the people that were there an my best friend took that guy out side an told him did they do anything an he said that they just tung kissed an the next day my friend was friend to my girlfriend an she said she didn't remember anything that had happened so I just don't know what to do at this point

Find a new girlfriend who you can trust, and you won't have to worry about what you need to do at this point. Plain and simple. It doesn't matter if she got drunk and can't remember. She put herself in that situation, and then was fooling around with another guy. You are destined for more hurt if you stay with her. Mark my words!

Not a good sign for a female to get that drunk, she doesn't remember what she is doing, and who she is doing it to. Unless she has learned her lesson, which I doubt, she may well do it again.

Find a new girl that is worth trusting. If you can't handle your alcohol, then don't drink. By the way you sound, this appears to be highly underage drinking(16?) and drinking that much at that age is not smart at all.