My Ex left with OW yet he continually told me how he never wanted a divorce and " our divorce will be very messy". NO matter how much I told him that what he was doing was extremely hard on the kids - he just kept saying "they'll bounce back, they'll be fine".
When ex moved back home for a week (3 months after he first left), I asked him to read "After the Affair". WHen he left again, the book was on the bed. He had highlighted ANYTHING he could find that supported HIS version of things. Stuff that didn't make sense without the follow up sentences - I doubt he read that far.
I could write volumes about the crazy things he has said and done. So yes, I think it is all about the crazy MLC mindset.
