Read dear Abby today - there's a letter from a woman who had a MLC in her 30's, running around, H begged her but she wouldn't stop, so he divorced her and ended up remarrying. Woman realizes now, several years later, that she still loves H (and he has told relatives that he'll always love her) - BUT - he's married to this really nice woman so she can't do anything about it.
Made me think of so many people here on the boards who are trying to wait out their spouses MLC - for this very reason.