I love a guy but I'll never see him again?

This summer I went to Irish college with a few of my friends for 3 weeks and I met a boy there who was so nice and funny. At the start of the course I didn't really notice him because I was interested in another guy but on like the fourth or fifth day I saw him look at me and then I started to notice him. As the three weeks went on I really started to like him allot but my friends didn't know what I saw in him, though they were really nice about it saying that he was really sweet and stuff. The biggest problem was that he was a charmer, so all the girls were falling all over him. I would see him look at me sometimes but I didn't make a big deal about it because I thought if he did like me he would have done something about it, even though he was kind of shy around people he didn't know he was loud around his friends and was really popular. And now and again he would talk to my group of friends and whenever he said something to me I would just stand there and say nothing back because I'm also shy but I was just in shock that he would say something to me! I would beat myself about it later (not really). But now the course is over and I miss him more and more everyday. I try not to bring him up in conversation around my friends even though I think about him all the time. He lives 3 hours away from me but I don't want to forget him... What should I do ?!