No, he's not gonna come back. Sometimes people lose the ones they love. It's not uncommon at all. And it's always very difficult to move on. One thing that comes into play is wanting what we can't have. The more he pulls away the more you want him. You have to realize how harmful that sort of thinking can be to yourself.
You seem dependent on his affection for your happiness and that needs to change. I think you may have low self esteem. A good cure would be to start dating again. My preferred method of dating is online through Plenty of Fish, but you might prefer meeting people at singles bars or other hangout spots. I think you would benefit from seeing how much your company can be desired.