What is the next move with him?

I'm interning with a hot guy that is the intern manager temporarily. We hit it off in conversation and we get alone with each other very well. Last time we had lunch it was just us too. The day before he asked me to go to a party and I did with a couple of close frineds. most of close friends said he could be a good fit for me. he closely payed attention to me during the party in converstion sober and not sober. he stayed in our area the most. I like this guy but he's a co worker..yet his last day of work is in three days. What should I do?