I don't know what to do, 10 points for best answer!?

Okay, well I went to a party the other day, and I really like this boy who was going. We talk quite a lot on Facebook, but we've only met once before the party. I think he's really good looking and I was originally planning to talk to him at the party and see what it came to. However, I couldn't really go over to talk to him because loads of people were already talking to him and I didn't kind of want to interrupt anything. So, I was waiting for the right moment, and just as I go up to talk to him, I see him standing in a corner with this other girl, hugging her really tightly. I was with my friend and tried not to care too much, but I kept looking over and they were hugging for like 10 minutes, non stop. Then everyone was like 'Oh, they're going out now!' so of course, I was like really upset because I still really like him. But i tried to be happy for her, and I kind of plastered on a fake smile and carried on with the party and just stuck with my friends. However, I kept seeing him looking at me, as if he was trying to get my attention or something? And they were STILL hugging, and then they kissed, bearing in mind this was the first time they met. I know I shouldn't be jealous because I can't have him all to myself, i KNOW, but I just don't know how to get over him. Please, ANY advice is much appreciated and best answer gets 10 points! thanks so much