This is a good point. As a life goal I am trying to see the destitute lives people like this lead, as punishment in itself. Thank you for your help in this.

I take it all back. I would tell the woman everything I could think of to help her to keep him forever. Then I would make a public announcement about how I found out but there were no hard feelings, wish them well, and pay for a honeymoon-style month-long trip for them. All without letting him know ahead of time.