What Would You Do?

This weekend I was presented with some soap-worthy drama that I have no idea how to handle.

I have a friend who has recently gotten married and had a baby. I didn't know much about the guy although I'd seen him around before, but other friends expressed their concern that dude was a dog. From brief interaction with him, I knew he was a flirt, but I didn't learn the extent of his actions until Saturday.

While talking to a good friend, this guy came up. She told me that a mutual friend of ours met him one night at a club where his band was playing. She asked if he was seeing anyone and he said no, he was single. Long story short: they have a one-night stand, she feels awful & avoids him. One day she & some others run into the couple (while the wife was still pregnant); he plays the "we just met" game. Then he texts her around 5-something in the morning one day, asking if he can come over "to chill." She tells him off & that's that. Later, she finds out that was right after his wife had the baby.

I won't even get into how he tried to get back at another friend of mine who he used to mess around with & tried to holla at again right after getting married....

Basically he's f*cked over two of my friends, and only one of them knows it. He shouldn't get away with that.

So now I'm trying to decide whether I should tell his wife or not. Like I stated, she's a friend. As sweet as she is, she definitely doesn't deserve that kind of treatment. And if he's trying to bone two other folks that I know of, imagine how many he may be messing with that I don't know about! I'd hate for him to bring her something she can't get rid of, if ya know what I mean.

And just to add the icing to the cake: I used to talk to this guy's cousin a good little while back. I don't want it to seem like some kind of delayed, roundabout revenge because it's absolutely nothing like that. This could be a whole can of worms that I definitely don't want to get entangled in.

So what would you do? Tell her and let whatever happens happen? Keep your mouth shut and hope for the best? Only say something should she mention it? Confront the guy?