** member to member **
Is it all about the mindset of the betrayed partner and the subsequent actions of the wayward spouse, or are there some details that are simply too damaging to overcome?
I think you need to add a lot more alternatives in their to make this a useful question.
Some people D after infidelity because of the infidelity (though I think it's much more than that for many BSes who choose R). In any case, it's clear that some people are unwilling and/or unable to to R, and it's clear that some people R, some happily, some not so much.
I'm pretty sure, however, that SI (and the many other sources available for research) does not provide enough data to support much in the way of conclusions.
IMO, anyone who decides to stay or go based on a pre-infidelity guess about their response may be doing themselves a major disservice. Moltke, mediated by Tyson, said, 'Everybody has plans until they get hit for the first time.'
Infidelity was NOT an automatic deal-breaker for W and me, but I surely did not let that bind me on or after d-day. Our MC put the probabilities of D & R at 50-50 on d-day.
As others have written, I don't know what my line in the sand would have been. I don't think anyone knows what their line really is until it's tested. W tested mine; she didn't cross it to the extent of ending our M ... except that we changed our M, so maybe she did kill our M ... or maybe I did, or maybe both of us did ... you have to have a mind for metaphor to understand, and you need to accept that metaphor trumps logic.
I know you think you have a line. You haven't told us how it was tested.
For many, reconciliation is about moving forward past mistakes.
I guess you could say that, but it's a very sloppy and vague way of describing recovering from being betrayed.
I don't see recovery in those terms, and I doubt that many who have R's do. I chose R because I thought we'd create a loving M that helped both of us live a life we wanted to live. We wrote off no 'mistake'; an A is not a mistake.
I had no interest in a marriage with a major characteristic of 'no more cheating'; that was way too low a requirement. Fortunately, it was way too low a bar for my W, too.
I also see 'moving past the A' as a major minimization. I think minimizing is the wrong approach to recovering from betrayal between adults. (That doesn't mean I think kids should minimize betrayals - it just means I don't want to spend energy thinking about betrayals between kids.) IMO, minimizing probably plays a part in the stories of most of the people who come here feeling awful long after learning of the A. (I don't blame them - many 'experts' then and now recommend rug-sweeping, which is maximum minimization.)