Reply #23: Although you didn't define what you mean by "ex", I'll say this:

[Rabrrrrrr]

I am still in contact with many of my "ex"es - but I was never married to any of them - and sometimes go hang out with them.

My partner is also still in contact with many of her "ex"es, and quite often goes out to dinner or bars with them (one of which is now a woman...), including her one former husband (though not 'friendly' with him, she does still, professionally, need to be around him, and they get along fine).

She is never threatened by my contact with exes, I've never felt threatened by her contact with her exes.

In my opinion, people who are threatened are immature shitbags.