In your case SR your H moved into the basement to prove to OW he was in a monogamous affair. To his mind he's being perfectly honourable and faithful to her so if she cheated on him HE would be the one who was treated unfairly... To his mind YOU made mistakes so He can legitimately cheat on you.. Particularly after three years in... I think he's pretty much accepted that you are ok with it.
To his mind he's the perfect husband... YOU made mistakes so its ok for him to cheat... If OW was caught cheating on HIM then he would be devastated.
Thanks for taking the time to respond to this, Allen. Appreciate it!
It helps me get inside his head and plan my next move...
