How common is it for divorced/separated people to hook up with each other?

How common is it for divorced/separated people to hook up with each other?

Seems like a weird question, but I've heard it's not exactly uncommon.

My own parents have been divorced for the majority of my life and I remember suspecting them being up to something when we went for a joint vacation some years ago or when checking with each other for us children, and my mother confirmed they did occasionally.

Thoughts?

How common is it for divorced/separated people to hook up with each other?
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