dont even trust close mutual friends when your wife needs to confide her secrets, concerns and feelings in men other then you.
I agree. Plus (and the point i was trying to make) is that it sets you up, John, in this whole "slippery-slope" thing, whereby you've got to make case-by-case, subjective judgment calls on "Oh, this guy is OK; this other guy isn't," etc.
I personally don't think it's such a hot idea for married people to have platonic friendships with someone of the oppositive sex (outside of business relationships) PERIOD, but CERTAINLY not when a marriage reaches the stage where yours is, John, with multiple infidelities. It's just playing with fire, and giving her the matches.