Gently, your W damaged your M by going outside instead of addressing her issues inside the M. Even if she brought the issues up without a satisfactory response, she would have been better off to end the M than to cheat.
But she chose to cheat.
Once a WS takes responsibility for their actions and starts to change from cheater to good partner, many of those old pre-A issues disappear - because resentment is more of the problem than the ostensible issue is, and changing from cheater to good partner involves, in part, accepting that resentment is the resenter's - the WS's - issue.
Just keep saying, 'We can't resolve that while you're in this other relationship, while this M is dying.' That's all. Your partner's resentments are like high cholesterol. While she' in her A, your M is bleeding out in the ER.
There are without doubt some real pre-A issues. They will come up again in R, and if your WS is really on board for R, she'll bring them up and you will be able to resolve them one good way or another.
You have to risk your M to save it. I know it's hard to do that. I know the risk of loss looms large. It really isn't - your W is at least partly with another person. Your M is dead in a very real way, but if you both do your work, you can bring back to life, more vibrant that it ever was.
But you need to take the risk.
The positive side of that is this: you get to choose when you rake that risk. Most of us here think the sooner the better for you. But you know your sitch better than anyone here does.
My W as ready to be honest when she revealed her A. But I asked her if she was cheating 4 months before d-day and 6 weeks before d-day, and she denied any problem and any A. If I had pushed harder (and I wish I did), would she have chosen honesty earlier, or would she have told me she needed time to decide? And what would I have done, if she had done either?
I suspect I would have waited. Most people do. That would have cast a pall over any eventual R, but I think I'd have waited. That's what you're doing - temporizing. No one can predict what your partner will do, but you are right there, and you receive her non-verbal communications, and that tells you something.
But I have total confidence saying that unless your W makes the choice for you by deciding to leave for good, you'll have to give her some sort of ultimatum - set your boundary - at sometime in the future. And if she does leave, you may have to decide to separate or D. If she chooses R, you'll have to decide if you'll take her back and under what conditions (i.e. your requirements for R).
Right now, I think you're floating thinking you don't have to make decisions. That's flat out wrong. You are making decisions now, to abide by her ultimatum. That may be best for you, but I urge you to look inside, set your boundaries, and enforce them.
Having written the above, I know what my point is. To R, you need to figure out your requirements for R. To temporize, you also need to set your requirements for waiting.What behavior will keep in in a waiting state? Under what conditions will you choose to end waiting?
[This message edited by SI Staff at 4:07 PM, Wednesday, May 4th]