You made the all-too-common mistake of letting him back in too easily. IF he says he wants to come back to the marriage (and it sounds like he's really just waffling so far), then say "I'm afraid it's not that easy anymore." LET HIM WORK AT IT . . . if he is sincere, he will move Heaven and Earth to get you back.
Frankly, he doesn't sound much like a man of character that is worthy of you, but that of course is your decision. In the meantime, GAL, GAL, GAL.
