I do have a little interesting story to tell on this as well. After my first love broke up with me many years ago, she moved on and met a new guy got married, had a kid with him and so on. After we broke up it was hard but i did not want to have any contact with her because I respected her decision and thanks to God there are plenty of other girls around. She even moved and lived in another state. After 4-5 years she came back to my state and asked to get back what we had in the past. I certainly refused her offer. I am trying to say from the male perspective, that girls do not like cry-babbies. They usually like bad boys much more. By not contacting her and moving on with your life the way you should you show her that you have enough self-confidence and strength to move on. They see you there as success and they want you back.
That's what I think at least.