Originally Posted by valinors_sorrow
If you've determined that your relationship is over (and it sounds like you have) then let it go and learn from it. There is no proven way to get him back. And often when people do that, it still doesn't work out.
I believe you need to improve your communication and negotiation skills. I can't even tell what the problem was between you two and I'll bet you both weren't so very clear either. When a difficult conversations gets going too fast and you find yourself just reacting out of fear and hurt, stop the conversation with a whoa! Then ask (gently) what is the real problem here and can we talk more about either 1) defining it, or if we agree on it, 2) more about the solutions possible?
Think about all that you can improve on you for the next time. Make the pain of this count for something of value.