I don't know even if they where to some how survive it , I just don't see how hutch would ever trust her again after all before she found out that hutch knew he constantly asked her if she needed to tell him anything or something along those lines and when she leaves to go to the meeting she's like nothing will ever happen again it will just be dinner then home and then she blows him / bangs him in the drive way so he knows at the current moment she is just consistently lying to him
If it does last I would imagine it will transition from a marriage of love to a marriage of convenience
In a marriage of convenience one party does not repeatedly reach out to the other for love. I think husband sees that from her and doesn't have the heart to really turn away from her. 25 years of love.
They have a very long way to go though, including reestablishing trust. The burden of proof is on her, and she absolutely must come clean not because he asks her point blank, but because she has come to feel she must even though he does not ask. That admission from her would be the beginning of trust again. The only way this could work is that they really do really do love each other and want to get past this. It is possible.
Admission would include admitting that she feels unable to resist boss, does not know what to do, but cannot bear the thought of loosing husband. Let's leave town.
There is an old thought about addiction: how many times do you believe it when an addict says they are quitting? Ans: as many as it takes. The intent to quit says it all. But quitting is so hard.
If all else fails, go to a shrink and tell them you are suffering from the consequences of sex addiction. They say that sexual problems like that are the easiest to treat in therapy. So go for it if you need to.