A person can not be unfaithful if no formal comitment was made in the first place as is done in a mairige.
Befriend them and hopefully they will learn their lesson.
confront them, or if its you confront yourself
Confront your friend or talk to someone you really trust. Either one works fine, but I would rather confront my friend if I got into a fight with her.
you can run from it, or you can confront them.
When you friend is keeping secrets from you it is best to confront them to get clarity
Confront her and ask her what the problem is.
Confront them!! let them now how you feel!!
Leave him, confront him, or ignore him completely.
Confront them tell them that you are NOT interested in them
Confront her if you are certain they are and ask them why.
After telling a friend that her boyfriend had been unfaithful, the girl felt remorse.
See if your friends have them as a friend them confront them about it and if its true then they are not your friend
You do not. Right now he and your friend have a relationship and, ethically, you need to let them handle it.