I have a serious issue. My best friend (like a brother to me) found a GF and she is insanely manipulative and has many red flags.

He knows I found RP two years ago and have been practicing the tools given here ever since. I cured my oneitis, fucked a ton of girls and hit the gym hard. He is also on top of his shit and is 9% body fat and is playing junior hockey. (basically high smv)

He is dating an absolute 5 who as I said, is fucked in the head. I keep telling him that she's dumb, pointing out where she lied, telling him to leave before he gets burned anymore. I even have a recording of where she fucked up and HE apologized and he acknowledged that he acted super beta.

To me and to some others he is just losing his value as a man, saying he doesn't give a shit about her but also apologizing and acting BP overall.

I can't stop talking to him but I also can't stop thinking of his relationship, I know he has to go through the experience himself, but for the meantime how do I stop caring about his BP behavior and relationship?