i basically said that and she said i was supposed to protect her.
When she is in a committed, faithful relationship with you as husband-and-wife, YES, your job is to protect her. Heaven HELP a man who says something to my wife NOW, about her infidelity, now that she chose to do the right thing and end it and fight for her family. But WHILE they are cheating? . . . Unh-uh. Not yer job, man. In fact, I'd maintain that it's your job precisely NOT to. Just as we let our kids, often to our own pain, learn to feel the consequences of their actions so that they can LEARN from them, I think we too are to let our wayward spouses feel the consequences of their adultery.
I had a very wise mentor on this forum, and he used to say "Never shelter an infidel from the consequences of their infidelity."