I have an uncle who is with my mother CONSTANTLY. Is this a sign of an emotional affair even though they are siblings?

He has been divorced now for six years and when he was married he and my mother were not particularly close at all in fact his wife hated my mother since she was friends with one of my ex-aunts enemies. Now that they are divorced my uncle is with my Mom more often then even my Dad is. They even travel together to... show more He has been divorced now for six years and when he was married he and my mother were not particularly close at all in fact his wife hated my mother since she was friends with one of my ex-aunts enemies. Now that they are divorced my uncle is with my Mom more often then even my Dad is. They even travel together to my mother’s beach house.
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