I'll pass on some advice that got me through a 4 year break up. We were engaged to be married, and she was blowing this black dude. Anyway, a friend at the tme told me "When you fall off the horse, you need to get right back back on. Find yourself a hobby horse, and just poke the shit out of her for a few months. You'll forget all about the bitch".
Don't know if it that helps.... I took the advice though. He was right. After i got over her, I left my hobby horse, took some alone "me" time, and then hooked up with my now, wife of 7 years.