So I just got back from Spain for a school trip and there were around 18 of us. My girlfriend was there and so was one of my best friends. For 5 of the days we were there we stayed with a family and i had a shitty family that wouldnt let me go out at all. The last night we were there, my girlfriend and my best friend went to a party there, and i guess they were both just hammered as hell and i dont know if anything went down between them or not. the next day i was kinda joking with my friend asking if he did anything with her and he just gave me a "i was drunk" response. Yesterday, when i got home, i was at his house with some people and i was playing x-box when i hear one of my friends ask my friend who went to spain with me if he did anything, then i heard him whisper something and the other kid said (at least this is what i heard) "does he know that? atta boy!" so i dont know if he did do anything.
So i have 2 questions:
1) should i confront my girlfriend about it?
2) if something did happen, do i have a reason to be mad at both of them because they were both smashed?