@Thewookiemustgoi agree with a lot of what you say (per my previous posts I am dealing with the fallout of discovering that my DH was sexting an ex gf a few years ago when we were going through a very bad patch. Plans were made to meet up for sex but he didn’t go through with it).
I do have the self awareness to realise that a part of the reason I agree with you on a lot is because I have to. Because I’ve been cheated on (admittedly in a much less black and white way than had there been actual sex involved.) so I have to tell myself that he does value me etc.
Where I disagree somewhat is saying that he affair is never anything to do with the spouse.
In our case, it was a lot to do with me. I was horrible and I can see that now. If I hadn’t been as unpleasant and unapproachable as I was, we wouldn’t have been in a sexless relationship and he wouldn’t have been tempted by her. I’m not shouldering all the blame here, I felt unsupported and overwhelmed with young kids and losing my job. But it was very much a two way thing.
The fact that it was an ex chimes with what you are saying because I think a lot of it was reminiscing about his youth, which I completely understand is attractive when you are in the trenches with young kids. And she was handing herself to him on a plate and really stroking his ego at a time when I gave him absolutely no affection.
The one saving grace in my situation is that he didn’t go through with sex with her. If he had, things would be much harder. I still wouldn’t be in a financial position to leave him, but I don’t think I could get over it.
Ultimately I guess everybody has to draw their line somewhere and I believe that nobody knows where that line is until they are actually in that situation. and I think, like me, a lot of people’s lines are actually not where they thought they would be.