Please...he just didn't have the emotional fortitude to do it without having a new person to sooth his own emotional shortcomings. She was his insurance when he knew it was over while he looked for someone else and that makes him a pos.
I agree with every word you wrote, jtyangel,
Without trust, you can't sustain a relationship in the same house. With it, you can sustain it no matter the distance, or the time interval between visits.