Well he can't move past it....He has seen this as 'cheating'
i think lots of us saw this coming - him looking for an excuse to blame you for the end of the marriage. THAT'S why he never gave you a definite answer - he had to make it look like it was all your doing so he can say "see....i told you she always did things what she wanted and never considered me".
If i had to predict his next move - he will be telling everyone that your marriage is over and YOU are to blame cos you 'cheated'.
i wouldn't be giving him that satisfaction. i think the best thing you can do is let everyone know WHY your marriage is over - his lack of commitment and love. Make sure those who know understand that the marriage was over weeks ago, that you tried the 'living as a separated couple under the same roof' but it wasn't working - hence why you both have been staying with family on/off.
don't let him 'off' because you feel sorry for him.
he's done this to you deliberately and that shows just how little he cares about you.