Forgot to mention. I have been doing the gal and detachment for 2 months and I'm trying not to concern myself with who my w talks to.
These two tactics are not mutually exclusive.
It's perfectly possible to GAL, detach, AND confront your wife about the EA (at least) relationshp with the other man.
In fact, I suggest you do so. Because once she knows that you know, and you do nothing about it, she loses respect for you . . . DAILY. And since women tie their feelings of love very closely with their feelings of respect, she's actually losing love for you when you enable her inappropriate behavior.