My wife had a short emotional affair. She even told me about one night when she ineptly tried to break up our marriage. I called the other guys wife and told her the story (we were all friends) she claimed he had no clue what was going on but from reading his emails he knew but he was just basking in the attention my wife was giving him. Let’s say it was pretty one sided. But it had the same effect as a regular affair. She wanted a divorce. Thankfully we had a great therapist that got us back on the right track. Even he admitted that it’s rare for a couple to recover from a woman’s emotional detachment. I learned a lot. First we are just animals sometimes and have these needs. Whether we want them or not. Secondly humans have a big brain that can override these animal “needs” but not everyone have the willpower to do that. Something in our relationship snapped (I was a classic Nice Guy, which was one of the main issues).