I'm doing ok sometimes. It sounds like he is trying to hold on. If it's stress that broke you two up than you both needed to alleviate that stress and breaking up was the way to do it. So it sounds like a break from each other and not permanent. It sounds like he misses you and doesn't want it to be permanent either.
People make irrational decisions.
Maybe he feels like he made a mistake. You have to talk to him. ANd if it's truly meant to be than it will work. Guys hurt too. Sounds like you have one.