Heartbreak

I just need to know what I can do to get over this heartbreak ASAP. Yesterday my boyfriend of almost 6 months broke it off. He was the first guy I have ever been so madly in love with. He was the one constant in my chaotic life, and he was my best friend. Our relationship was great, but he ended it because we’re going different ways for college in a few months (which I get, I just thought we’d stay together until we went our separate ways). But I’ve never felt pain this badly. What can I do to cure it?