Has expressed dissatisfaction about the marriage, over many years.
Has perhaps enlisted help in the past, in the form of counselling, to repair the marriage in the past.
Issues in the marriage escalate to boiling point, then bomb.
Indecision about their decision
OP- found this on the resources thread under debate-mlc vs. was I think I can definitely say that H is in full MLC and is not a walk away spouse. When he first dropped the bomb, I asked him so many questions on what was so bad, why was he unhappy etc. etc. and everytime he'd answer "I don't know" I WISH I had not concentrated so much on the fact that there was OW and found this sooner. Might not have made a difference but I would like to think I would have done some things differently. Well, I know now and am eager to get to "work"!!! More reading ahead!
M48 H53 M16 T18 S16 D13 SS30 H drops bomb PA/8-30-09 H leaves 12-30-09 D filed by H 2-10 H asks to come home 4-11 Piecing