SA I am extremely confused by this bit of history. Presumably XW was the wife your h had before you? But without knowing the circumstances of their separation and divorce it is hard to assess the truth of what the XW might be saying. She may not feel well disposed towards you, even if she left your h.
I would hold off sending any emails - it may not be true. If it is true, I wouldn't send that email. What will it achieve, except to put your h on the defensive, and MLcers are not at their best when on the defensive!!
