I feel so sad for his wife

[E039]

Unfortunately last year I was dating I man I met online who turned out to be married. Yep, stupid me, I fell for the lies.
I somehow found out on facebook what his real name was and that he was married.
Today as I was using a messaging app I clicked on the find friends icon and up came his pseudo name he had been using (I have no idea how it traces contacts) and it looks like he's still active on it so he's probably still carrying on seeing other women.
I possibly did the wrong this and out of curiosity checked his fb account and looked at his wife's (yep, I know, another stupid thing to do). I felt so sad to see that she is posting happy photos of them etc.
I suddenly felt so sad (not about not seeing him) because I realised she's obviously oblivious to what he's doing and what he's doing behind her back.
I think she should know. I feel so sorry for her.

This thread is a little bit odd. Everyone seems far too concerned with their dislike of face book and not at all concerned that there is an innocent woman (presumably) that is living a lie and having her health put at risk through no fault of her own!
I'm not a massive fan of FB either for the record and its true a lot of what is on there is crap, but we just don't know do we?
Maybe the wife does know her husband is a scum bag or maybe she is blissfully unaware. Perhaps she's thinking of having another baby, its not fair to let her carry on now you know.
Agree with PP, I'd maybe screenshot his dating profile and any other 'evidence' you may have that won't reveal your identity, create a new and anonymous email account and send it to her.
You don't have to engage any further and perhaps that might help you walk away with a clear conscience.

Do you have proof? If so then tell her. If she already knows then no harm done.

If not then I wouldn't because a man like that will probably lie straight to her face and she will feel even more stupid/confused when she does find out. Not that's she's stupid, he's stupid.