He said "you should call me sometime." What does that mean?

There was a rave at my school on Saturday night and I ended up dancing and making out (a lot) with this cute guy from my floor. We exchanged numbers after the dancing ended and we walked back to the building together. We were kissing in the hallway at the end of the night and he said, "You should give me a call sometime." I replied that he should do the same. It's been a couple of days and I haven't seen or heard from him. I don't know if this makes a difference, but on the dance floor when we were making out he discovered that I had a bloody nose (baaah mortifying). I ran to go take care of it and when I went to go back, he was coming out and asked, "are you okay?" Then we proceeded to dance and make out some more. So I guess he still wanted to kiss me. Anyway, what should I do if I want Round 2?