I would have to agree with Sinfix 100%. Nothing worse than a gossiper. In my book it is all it is. I would expect that more from a female.

IMO, it is not his job to tell anyone, or either party involved. The other guy trusted him showing him the pics. If he didn't like it he should have simply not looked at them and moved on. I would be angrier than the guy who just drove off. I probably wouldn't get physical, but I know for a fact me and others would lose respect for the guy who told the girl which in this case is Bacon. Under ANY circumstances should he tell either the girl or the wife.

I also agree about the rule with friends. If I had a close long time friend that was getting cheated on I would definitely tell him. Hell, I've have 2 acquaintances I hang out with sometimes that I've known for a couple of years ask me if their girls have cheated on them. I am 100% sure they do since I see them at the club I promote continuously coming in and out with guys. I simply told them that I didn't know.
It is not my job to put them on blast. Now, if they were close friends, I would definitely tell them.

If I was Bacon I would stop doing that even if I feel it is the right the to do. Whether you are wrong or right, one day you might tell on the wrong person, and many variables can go wrong at that point.