So last night i was at a party and i'm a extreme light weight as i'm only 5,3 and i was pretty drunk. i met this guy and we talked a lot at the party and even got alone however he was 100% sober and he never tried to do anything the most we did was hug. he was so sweet and honestly i felt like we had such a connection. I ended up having to leave very fast and never got his number or snap. Today i found out he has a girlfriend of a year but he told me he was single. I definitely should back off and forget about it but i really like this guy , we have lots of mutual friends but i don't know if i should try and contact him or what ... someone' help