It seems to be a game of chase, as I have experienced it... When my X boyfriend broke up with me... because I caught him cheating... I was heart broken too... it was totally unexpected.. thank God I found out when I did!!
Anyway, I didn't talk to him for a long time - the "NC" works. It hurts though... deeply. We were suppose to get married. But ask yourself... why did the X break up with you... this is the question you need to honestly answer to help yourself. My X figured out what he had done, and came back... wouldn't leave me alone. After his childish texting, emails and wanting me to do more business for him... I said enough. I decided I didn't want him in my life anymore after he lied to me and his friends over and over; if he's done it once he will do it again.
Think about why you want this person back. You want someone to love you for who you are, someone who you click with, you have an awesome chemistry with? Act like you don't care... I showed my X I could move on, without him in my life. It worked... he came back - and I didn't take him back... grass isn't always greener... and through all of this suffering... I met someone wonderful. Think about this. There might be a greater plan.