How do i help my friend deal with his cheating girlfriend?

well about 5 months ago my friend hooked up with this seemingly nice girl who really showed him she cared. When they first started talking she revealed how she did some perculiar thingsin her past as well as cheat on boyfrend. I warned him she would do it again after he suspected a co-worker of hers who liked her. Sure enough she did,but he took her back. What should I do if it happens again cause i dont want to see my friend devastated..?How do i help my friend deal with his cheating girlfriend?
Tell him to dump the no-good skeezy little whore and go find someone who will be good for him.How do i help my friend deal with his cheating girlfriend?
tell him that u dnt wana c some broad ruin him
i think you should talk to your friend about the situation and see what he thinks of it. Make sure he is prepared and knows that this might happen again and just tell him what you think in the nicest way possible.
sleep with him
not to be funny, you get with him. its not like the girl is your friend. or is she? sounds like you guys have more things in common anyway.

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