How do I get over my ex?

First off, I am 21 and he's 19. I started dating my ex about a year ago. We had an amazing relationship and he was my first true love. I spent thousands of dollars visiting him because he lived far away. We had an amazing time together, but when I got home from the trip, he told me he used me for sex and money and left me. After that I still talked to him every day and just clung onto the hope we would be together again one day. Then he asked me to visit again, and I thought he wanted to be with me, so I visited again. All he wanted was sex. When I got home the second time, I still clung onto him and he talked to me constantly all day and night, but he always said we were just friends. Now, I see today on facebook he has a new girlfriend. He texted me and told me not to be mad. I deleted him and deleted his number and all the pictures I have of him. But now, I need to get over him. I don't really have any friends to hangout with, because I gave up my social life for him. I know I was stupid. But I truely loved him unconditionally and gave him everything I could. I just wasn't good enough for him, in his eyes. I don't know what to do. I know time heals broken hearts, but I've never felt this pain before in my life, even after breakups. I have a few online friends but we don't talk much. What should I do to get over him? I want to feel better.