Okay so there's this guy....?

I just met him this year at school and he seemed like a really great guy. Of course I didn't think he would ever notice me until one day I walked up to my friend that was sitting across the table from him talking to his other friend and I started talking to her. Later on he came up and started talking to me. I was surprised that I didn't start hyperventilating because just a few days before this happened my friends told me that he'd been looking at me from across the room. It just made my day that he even knew my name. So for a few days we talked and he was really nice to me and my friends swore he was flirting. I had told myself that I wouldn't, no matter what happened start to like him. Well, my heart told me otherwise. And then he began to talk to me less and less. I was confused because I thought everything was fine and after a while he just quit talking to me all together. (This guy is known for doing that to the ladies) After a couple months of not talking to him I was so depressed that he would never talk to me again and my life was over (I know, dramatic) (And I asked him to a dance but he said honestly that he had to do something that day and that he would have if he didn't have plans) I've tried so many times to just get over him and find someone else but its not that easy for me. I believe this is the hardest I've ever fell for a guy and I'm not sure if I should try getting over him or if I should just talk to him and tell him how I feel. What should I do?