You were hurt bc the relationship ended? How did it end? I have a few suggestions for you:
1) THink about all of the bad ****. This is what led to the breakup regardless of what happened. The relationship wasn't healthy. If you're missing it, then you're missing hte good times and ignoring the bad times dude.
2) Talk to other chicks. Itll help you forget about her and give you something else to think about and look forward to.
3) Be more social. You don't need to talk to chicks, only. Talk to guys, old people, couples, random people. It'll make you a new person and a more attractive dude. Build some social proof.
good luck man