See, my husband and I have an agreement: Absolutely NO lies, not under any circumstances. I can forgive virtually anything, but not lies.
So the dealio would be that he would have to tell me there is a woman that he is unbearably attracted to so we could figure out how to deal with it. If that meant giving him a "marriage vacation" to get it out of his system, I could actually do that (I mean, honestly, if you think about it I "shared" him with his wife while we were dating). I simply couldn't bear his lying to me, though.