I feel so sad for him. Ok I’ll stop babbling now ;-)
Babbling is good for you. If you went through the mess of blather that is my old - and seemingly current threads you'll know that you aren't unusual here at all.
I struggled for a long time on whether to stand or not. I believed a lot of the MLC diagnosis as it is described here and in similar places. My ex went through a lot of depression, acted out, got an OM, left (eventually). She even got the requisite tattoo - I think the MLC thing must come in a kit or something like that.
She perhaps went in to it about 4 or 5 years ago when she was in the midst of peri-menopause, empty nest and the whole turning 50 things.
I threw the towel in when it became clear that she preferred OM to me even though their relationship was nowhere like stable.
As far as I know, she's got a fairly standard life going on. Her and OM are still a thing although I don't believe they co-habit but they do occasionally vacation together I've heard. She's gotten a reasonable relationship with her kids.
I don't interact with her at all but the last times, during the divorce show her to be a very angry bitter woman.
So yes - perhaps they do come "through" the crisis but there are many paths out of the briar patch and I personally believe that few of them lead back the way they came. That requires effort, hard work and accepting responsibility for the choices they have made. Something that most, including my ex-wife aren't capable of.
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