Why It’s Good If He’s Friends With His Ex Wife
They may have children
If they have children together but they don’t maintain some level of friendship, that’s a very bad sign. They should be able to get along for the kids. They should be able to be at their child’s birthday party together, laugh, and have fun. If they can’t do that, then that belies a level of selfishness and immaturity that you don’t want to deal with.