fucked up

i was at a party the other night and i was beyond drunk, and i ended up getting with a freshman (im a junior) and his sister is in my grade and yelled at me for it and said i took advantage of him. did i? because i honestly cant remember what even happened. i was told by him what happened. so from what he told me it seems like he took advantage ofme because   if i was that drunk where i cant even remember what happened the next day he should never have even gone into a bedroom with me. all we did was makeout and he fingered me (so ive been told) but ive been involved with so much drama and its so annoying. i just want u guys to be honest with me even if its rude i need to know if what happened the other night is my fault or wrong in any way