Most Helpful Guy
He walked out meaning? are you two legally divorced or has he just by words said to you that he doesn't want this relationship anymore?
well if you are not legally divorced, then maybe still cares but not so much that he wants you back or maybe he is casually checking on you to see if you are happy or not? possible, right?
Most Helpful Girl
Because ideally, he wants to not only be free of any responsibilities he has in respect to you and any children you guys may have, but he'd like to keep a monopoly over you so that things could go back to exactly how they were before, if and when he decides to come back.
i. e. classic case of wanting his cake and to eat it too.