i've liked this guy for a while but i knew from his facebook that he was seeing someone. so i didn't make a move. well, i haven't checked facebook in a while and he never talks about his girlfriend. today we were hanging out and he came on to me and long story short we had sex. i figured he must have broken up with his girlfriend. i mean, i usually don't go asking everyone before i date them or kiss them if they're single cause i assume they are.
well i just checked his facebook and he's still listed as in a relationship and she left him a comment earlier today saying "i love you so much baby"
WHAT DO I DO?