Why in the world would even consider taking him back if he did come back? He dumped you for someone else. He was not faithful to you. You deserve better treatment than that. This guy is a player and if he should come back, there is no guarantee that he will not lead you along for awhile and then dump you once more when he find someone else to play with. There are guys out there that will be honest and true to you, the kind of guy you deserve. Don't tie yourself down with someone who does not deserve you. While you are holding on to the this guy, the really great one may pass you by.
He might or he might not that all depends on him
Don't dwell on that and move on. There are other fish in the sea!