I haven’t said anything because I want to remain close to him and I know very well he’s not afraid to cut friends off and is a bit cold-hearted.
So… not to sound too harsh but, why do you want someone like this in your life?
I get that he’s your friend, but you shouldn’t feel the need to walk on eggshells and avoid difficult topics with people who are supposed to be your friends.
I have a similar story, a friend I’d had through school who came out as gay in highschool. We’re still friends, we still talk regularly online. He’s aware of my positions but he doesn’t hold them against me. I pray for him, and I’ve talked to him about the random hookup culture before, but in the end it didn’t do much and so I don’t bring it up. I have a coworker in a similar situation, except he’s the older man now. He spends weekends partying and living a crazy life even though he admits that it makes him feel awful and he doesn’t like it. I asked him why he keeps at it and he just said that that’s just kind of what the lifestyle entails. It was a civil conversation, we’re still friends, he listened to me and I listened to him, we were both adults about it. The problem with these situations is just that, in 9/10 cases, pointing out the problems isn’t going to fix anything because people don’t want to give up on what they thing is a core aspect of their being.
However, not wanting to give up on it and being harsh enough to cut a friend out of your life simply for disagreeing with what you’re doing, are two very different things. What’s really going on here is probably that your friends conscience is making him acutely aware that what he’s doing is wrong, and he wants to silence that conscience however he can. That means that he has to cut out anyone and anything that makes him stop for a second and listen to the little voice telling him to stop. You see this same behavior in lots of people who’ve rejected something they used to hold in great importance. Pro-lifers who had an abortion and became radically pro-choice, ex-Catholics who spend all their time badmouthing the Church, divorced spouses, it all stems from the same cognitive dissonance that takes place when you act against a deeply-held principle.
Unfortunately, there’s really nothing you can do for people in that situation except pray for them and hope they hit rock bottom before it’s too late, because rock bottom is the only place where the voice will be able to reach them… I’ve personally known a couple of men who reached rock bottom, I met them in my recovery group, and they thank God for it because it was the catalyst to start the healing process.