Here is a good question for the spouse that is wanting to leave I thought of this morning. Are they running towards something or someone or are they running away from something or someone? The sooner you can assess this accurately the sooner you know how final the inevitable outcome will be.
At this point, and I could be wrong, but I think my H reasons for wanting to run away (he hasn’t gone anywhere yet) is to run away from something.
I think he has also romanticized what his life will be like when he’s single. I think he’s imagining what it will be like when he meets “the woman for him”! He’s not currently involved in an affair (to my knowledge and no signs point to that). I think he looks forward to life after our M ends. I think he believes he will feel better once it’s over.
I would say that my W is running away, as well.
And I would also agree that I think she has somewhat romanticized what the single life will be. She claims she will be a better parent without me (unlikely, but okay then). I also have no firm proof of an affair.