Say you have 2 close friends who recently got together. The only problem is, the guy was previously in a 3 year relationship with another man. He partially confessed to the woman before they hooked up, but he left out the details. Shortly after their new relationship started (I'd say within two weeks) the guy ended up cheating on her with his ex. After the third or fourth time, he felt guilty & told her that he "messed up" and asked her to forgive him, which she did. Again, he gave no details. The worst part is that he has continued to cheat on her with the ex ever since. I know all of this because he told me. After the first time he cheated, I told him that he needed to be totally honest with himself and figure out why he was cheating so early in a relationship. My question to you all is, should I let her know what's going on or just pretend I don't know anything & stay out of it? It's really hard to see her falling for this guy who is doing this to her. And before anyone suspects, no I do not want her for myself. These are just close friends.