I want him back. Cancer ex ignoring my messages?

I've known him for a year off and on. The break up was do to my behavior. And I've really learned my lesson. I've tried to reach out to him only twice in the last message I said "Just wanted to apologize for my behavior I let the fear of losing you get the best of me, It would drive me crazy. I would flip out for no reason and I ended up doing just that. Hope all is will with you" He still hasn't responded. I want to get over him. I did some what the same to him before I stopped talking to him for a few months. I don't know what to do. I've tried to get over him and don't understand why I've dated other guys keep myself busy now I work and go to school full time yet I still can't move on.
I want him back. Cancer ex ignoring my messages?
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