You know, I hate it when love interests don't get away with their scumminess. I hate it when a guy in shojo romance act like he's all that, and without fault without even acknowledging that the girl's troubles are because of him (*cough* hana yori no dango, for instance, *cough*)
But when a scumbag actually starts to realize his faults. Or that when the dude's actually remorseful of his actions, that. I can get behind.
So go down on your knees ex-husband and beg for forgiveness for your scumminess, and all's well.