Whats my ex playing at?

It sounds like he's very hurt by not only the break up, but by your harsh actions of how you treated him after the relationship ended. He's seen you in a new light that was not good and now in turmoil over whether or not to get back with you. Best thing to do now would be to back off to give him time and space to figure things out. By you constantly calling and asking him what's he going to do is probably just making matters worse. Let him have his time to think about things and so he can make his decision.