One of my ex-wife's stated priorities during mediation was that she wanted us to "still be friends" - despite running off chasing after OM knowing the hurt that caused and also not having made any effort stay in contact with me - or for that matter her own children.
She reduced that to "be able to be at family events together like weddings" - which TBH I could probably manage now but at the time I couldn't imagine.
Speaking not specifically of MLC - which I have some doubts of as a diagnosis - but about selfish people who cheat - it has been my impression from reading and from the reactions of my ex that they don't want to be a bad person and they want acceptance for what they've done or better yet pretend that they didn't do that.
A cynic would think that part of "wanting to be friends" is a prelude to feeling us out to see if we can be drawn back in.
On BD H52, W50 T27, M26 S21, D23 BD-9-Mar-16 D-15-Jan-18 Final-19-Apr-18 I am a storyteller. The story may do you no good. But a story is never for the listener. It is always for the one who tells