Girls girls girls!
Please remember this: You are NOT the exception you are the rule.
If you break up you will not get back together ... you are not the exception.
You can not change him ... you are not the exception
If he says he is not going to call ... he is not going to call ... you are not the exception.
I know you always hear about how "this girl" who changed her boyfriend or "this girl" that broke up with her boyfriend and he came crawling back. Those are exceptions and those do not happen to everyone. If you based your heart on a exception you are bound to get hurt.
Be smart girls like I know you can be.