Various thoughts:   number one, stay away and don't get involved in the affairs of ex-spouses.  One only gets one's fingers burnt.  Much better accept  the money and then keep one's own counsel, do one's own thing and consequently live in peace.  Second, is it possible that some people don't need to be in love to have a successful marriage and could basically be a spouse to any number of other halves?  I imagine this mindset must allow lots of people who have arranged marriages to make a success of their relationship. Our current western culture assumes everyone has to be in love romantically in order to have the prerequisite  type of love for marriage.  And another thing, that some people have a more successful relationship with a partner who isn't nice to them all the time, or that makes life difficult, or has a difficult temperament etc etc. and conversely end up bored with and desirous of escaping from the relationship with someone who is invariably decent, kind, loving and generally problem-free.