I don't know the back story, so not sure how DBing worked for you when you were first here. With 44 posts prior to coming back now, I'm guessing that things just sort of worked themselves out for you and your W.

I have to be honest and say that I am sure you want someone to tell you it's OK to talk to your s about this and enlist his help to get your W to reconsider...

But I'm not the person to tell you it is OK...

Adult or not, it is my opinion that one's children not be enlisted for this purpose. Of course, if they involve themselves of their own accord, that is a different story...

But telling your s anything, even under the "reason" of informing him... it may simply be a covert way that you are manipulating his relationship with his mother in order to serve your cause...

Even if he wasn't your son, it would be no different than asking your best friend to talk to your W...

If this has happened before, than I would submit that the two of you didn't resolve the things that caused "this" the first time, thus it's repeating itself...

I completely understand if you decide to go ahead and talk to your son regardless... but unless your W and yourself are prepared to "do the work"... then having that intervention again only delays the inevitable...

So, your W cheated on you the last time?

If so, why would you want to save your M this time, with a woman who is a chronic cheater?