It wasn't easy getting over her. We went to the same college, so I would try and walk by where she'd be just to catch a glimpse of her....once I made a conscious effort to stay away from her, things got easier. Also, I found out she was cheating on me and I saw her making out with one of my friends SHORTLY after we broke up, so at first, it was hard, but ultimately, it made it easier getting over her.
Vilify her. Make her a villain. Let your guy friends talk shit on her (make sure it's real though. If they are saying untrue things just to make you "feel better," it won't work), you can talk shit on her, write about her, go to forums and talk about her, write down all the AWFUL things she did to you, do NOT sleep with another girl (I did, and it made me feel worse), and find ways to distract yourself. I was taking a class that I LOVED (political philosophy), so I was constantly reading. Also, I worked out A LOT more. Then, I planned a trip to South Africa.
You eventually begin to realize that she wasn't "true love," but rather JUST love, or even lust. Once the rose-colored glasses come off, you begin to appreciate her for what she was, but realize that it really wasn't as right as you thought it was. There are DEFINITELY better girls out there (and shortly after her, I met an ENTP who, for a VERY long time, 14 months to be exact, I thought was perfect for me. Now, THOSE rose-colored glasses have been taken off and I realize she's still a child).
I'll always remember her as my first love, but yes, I do believe that true love will bury that relationship and make it almost one huge joke.