Hey Sarah
I am sorry it is over like this but I guess maybe it is for the best. I am sure you will eventually realize too that it was for good that it is over.

Try to write this down of whatever he did to you in a journal and read it every time you miss him, it will work as a reminder that he wasn’t meant for you. Also, eventually try to truly forgive him for what he did to you…this will really help you to move on.
Try reading the blog of ‘letting it go’ here. I think it is great.