What does it mean when...?

Well, I think, this is just my opinion, it probably means that he's missing you, but he doesn't want to be with you. He broke up with you and still rejected you four months ago. If he wants to be with you, he'll show it. I think he was just talking crap. If he's reminiscing then it probably means he just wants to relive what was once there without getting back together. :)