if i know my friends wife is cheating on him.

im not even sure what this means...

As a husband who was cheated on and not told by someone who knew I was super pissed when I figured it out on my own. I thought he was an asshole for not coming to me right away.

Deny that you knew for sure and he will excuse you.

There are some factors you guys are missing.

If you know him well, you can expect his reaction.

He would dump her for sure? Tell him.
He would not dump her, keep quiet.

You can confront her about it, if she knows you know for sure.

You want to gauge her guilt. If she shows no guilt, tell him.

If she shows guilt, let it be. Their relationship might turn out better than expected and the truth will get buried and over time it will become a non factor.

Ask a cop about domestic disturbance calls. Often the outside party becomes the enemy.

tell him or force her to. There are some pricks on here
guess they have no real friends.xx

she doesnt want you to tell him what you know? hence the dont call back

Your faqed. You know too much. You are in the mud with them by knowing this. Good luck. Hell is coming your way. Lol

better be honest now. you can bet she is trying to fill his head with shit about you.

send him an anonymous note, just a heads up then let him figure it out.

if he asked if you sent the note, be like "huh" say what?" "wow thats strange dude, you better check it out"

That's like grabbing the handle bars of a passing motorbike doing 100 miles an hour and in a speed wobble. Women are *highly* intuitive. They can SMELL if you cheated in their limbic systems.

So she paid him back. She will never trust him and she will probably have several 'pay back' flings on him..

The smartest thing he can do is to IMHO play out all the cards and ask her if she wants an open relationship. It forces her to accept what they have both done or end the relationship.

If I would find any of my friend's spouse cheating, I would definitely tell to my friend asap. Telling someone the TRUTH should not be used against the messenger (thou we all know it very often will be) and if your friend has an issue with you AFTER telling the truth.. he needs to grow up and if he does, it will do good for your friendship and trust in the future.

Universally, men are much more loyal to their male friends aka. buddies aka. bros than to their wifes or girlfriends, not to talk about their (rarely) female friends. So if my male friend would cheat on his gf/wife, I am not really 100% sure I would go and tell to his wife..

I think not, just because the sex just isn't the same for male and female and therefore females tend to make a LOT BIGGER issue about cheating anyways, as they rarely accept the fact that men can easily have sex without any "emotions" attached to it (except horniness).. meaning they will instantly and easily put a 20 year marriage/relationship, kids and whatnot to the scale with random cheat and assume they are of same weight.

If it would be some generic, teenage idiocy drama bromance learned from bad HW-movies, I wouldn't probably care if either one cheated.. cooz that is what they expect, want and aim for anyways in those kind of relationships, just to fill their boring lives with useless relationship drama.