Congratulate him. You may need a kidney someday.
StG
I like that. I have a tendency to do that; I will try to remember your quote next time.
The OP - good for you. I have friends I’ve drifted away from, too (pretty much all of them, come to think of it); the door is always open to walk back through, so maybe it will happen some day.
I was going to say “Congratulate him”, but you’ve already done that.
Now wait a couple of days or weeks and then ask “How come I never see you anymore? I kinda miss hanging out with you.”
If at any time in that conversation or subsequent contact, you find out that she doesn’t like you, ask why. Maybe she doesn’t think you like her, or is otherwise mistaken about something. If it’s the “no more friends” bit, then you can always say “Dude, of course she comes first, but you do need friends.” or something to that effect. That doesn’t accuse her of anything, it doesn’t blame her. It just points out to HIM that friends are a good thing.
I wouldn’t be too quick to blame the new girlfriend. People in the first stages of love sometimes blot out the rest of the world as they focus on each other.
Congratulate him sincerely and move on to friends who have more in common with you.
Unless you know she is actively evil (cheating on him, abusing him), congratulate him and wish him well.
Even when I have drifted away from some people, I don’t want bad things to happen to them. I do hope in a general, non commital way that they are having a good and happy life, wherever the hell they are and whatever they’re doing. I’m not going to go seek those people out or spend a lot of time pursuing a one way relationship - but if I hear good things have happened, I can spare a second to be happy for them.
Emailing “best wishes to you both” is not a major relationship investment. There’s no reason not to do so.