What should I do? 😱

Okay guys so we had a camp from my uni a few days ago and on the last night we had drinking games and all and when the dance began I get on really well with this guy.

He came up to me and asked me to dance with him, and he kissed me several times, we really hit it off. I didn't know him before. Then the next day we got back home and I didn't get to talk to him. I found him on facebook and added him but he hasn't messaged me yet.

I don't know what to do. Should I wait for him to message me or should I just make the first move and say hi?