I find someone I work with attractive - we work in a large, open plan office and there is no overlap with the work we do. I thought he was interested a while ago but I bumped into him one evening when I was with an old friend who is male and he had his arm around me and understandably the guy at work, I presume thought I was with him and I haven't had much contact with him since.
Last night was our Christmas works lunch and I was hoping that I'd get a chance to talk to him or more 
! In order to go (as it was all afternoon and early evening) I arranged for my son to stay with a friend for the night.
Anyway, we all went out for lunch then to a bar and all had quite a few drinks. By about 8pm though most people were leaving. I obviously didn't want to go as had rare babysitter and wanted to get talking to him. We ended up chatting and by 9pm everyone had left except for us! Kept on buying each other drinks and we stayed till 1am! end of the evening gave me a hug, said he'd had a really nice time, would like to do it again - said we should arrange works drinks again but that was it. I said that he'd got my email.
Not sure if he's interested or not?