I am not going to tell the wife, but I was surfing a dating website and saw a married friend on the site. I would not consider him one of my besties but he is a casual friend and I was shocked to see him out there so flagarently posting. He didn't mention his wife or two kids in the ad. I suspect he is just out there looking for a fling/FWB. I am certainly not going to say anything to the wife, but now I just feel completely uncomfortable talking to this friend again knowing what I know. Do I send him a note and ask what it is going on? Do I just pretend I didn't see it? Just for background, I am friends with him and not the wife. I don't want to date him, but I do want to tell him he is dunce for posting his picture online if he isn't in some sort of trial separation since being a "player" could negatively impact him in a divorce proceedings which could cost him big bucks.