Thanks all. Regarding this friend situation, It is a friend of mine from college and his W. Over time, my W and his W have bonded, to the point their friendship is stronger than ours in many ways. His W has gotten involved to a level that leaves me wondering what is going on. My sense is that the whole thing is toxic and I want no part of it. My friend is likely an innocent bystander. My W is manipulative. My friend's W -- I don't know what's going on there. She's an intelligent woman.
OK screw the anonymity. My friend's W wrote a letter supporting my W's parenting, which was an attachment to legal paperwork. That's only half of it. She also involved herself in the complication of sorting out our assets.
In any case, I'm just standing back and taking my time to sort it out. My friend reached out to me last week, but I have no idea what to say so I'm leaving it for now.