Hold your head up high, put your shoulders back and focus like a laser on yourself and your kids.
Let him go. He is not setting the bar for you! No MLCer is!! This is not the man you married. Seriously, those of us with MLC spouses could troll bus stations at 2am and meet better spouses.
Turn your attention 100% onto you and your kids.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced