Should I give up on this or do something?

[savannah]

Last semester I met this guy in one of my classes, and we didn't get to know each other very well, but he is so funny and nice and I ended up liking him a lot. Now, he's done school and so I never see him anymore, because we don't hang out with the same group of friends or anything. The one place I see him sometimes is local concerts, because we both really love music. Last night, I saw him again and we talked for like five seconds and it made me so sad because I would be too scared to ever say anything about how I feel.
We don't know each other very well, so it would be weird for me to talk to him on Facebook, but I like him so much!!! Should I just try to get over this? What should I do if I see him again? I wish we spent more time together so I could get to know him better.