This is on behalf of a friend.
A close relative of hers is getting divorced. The relative and her soon-to-be-ex-spouse have three children, all under 10. Because of various issues, the five all still live under the same roof. Friend is uncertain how much longer that is expected to last ... or if the kids even know about the situation. From what she says, it's pretty tense in that house.

Her relative is expecting everyone in the family to invite the soon-to-be-ex-spouse to all family events that he would normally attend with the family. Tension and all. Those who question this are told it's for the good of the kids. Friend is doubtful of this, and resentful that this is expected. However, she said she also figures it's none of her business how they manage their rel
ationship. So she wonders if she should grin and bear it and invite the guy (and all the underlying drama that involves) or somehow say, well, he's not family now, sorry. (Which sounds awful!)
How would you handle this if you were a family member?
I'll answer any questions I can, though I may have to refer to friend for most details. Thanks.