Taking the page down is good. Good, too, by covering with "sorry, wrong person".

Now, in your personal relationships with her, when she is being all self righteous, I don't see anything wrong with dropping little reminders that "we all have our weaknesses. It probably would be good for you to not judge others. I know I've done things I'm not proud of from my far past, haven't you?"

After a few of these hints, she may just start to figure out that he told you about it. (It doesn't take a psychology degree to assume that he would tell his spouse).

I actually have a similar situation. My wife was abused by her uncle when she was very young. When she told me, my relationship with that guy changed. I don't laugh at ANY of his jokes. And when all the guys are on the deck for "guy time" anything that spews out of his mouth makes me want to punch him. Or worse, out him for what he did in front of his whole family. I think I have given him the evil eye enough that he now knows that I know. I especially give him the evil eye when he talks about "women", if you know what I mean.

BUT my wife has asked me to not out him. To not do anything. I know it pains her to not be able to cope with the idea of outing him. I also know it pains her to have to cope on her own WITHOUT outing him. It is a real trap for her. Ultimately, it isn't for me to say anything. I can only support her choices.

So, we only go over on Christmas and Easter. Sometimes, his family can't make it. Those are the best holidays!