A month ago I went for a group meal with some friends. I have known one guy for 13 years and we were great friends. At the meal he was passive aggressive and belittling me and everyone in he group, including the waitress. I messaged him a few days later as his nastiness towards me had upset me. I did not mention the rest of the group or the waitress as that's up to them to speak out. I was compassionate towards him in my messages but he was defensive and made lots of excuses up.
We were going to meet to catch up a few days after the meal, this was before I messaged him about his behaviour. He cancelled our catch up saying he was 'busy with work'. Since then he has cut contact with us all. The one guy in our friendship group he has known for over 40 years and he didn't even bother to send him a birthday card or message like he does every year.
He is fixated on a work colleague now and it's like only she matters. He is gay so he is not trying to date her. Is this a sign it's time to move on? I still see some of the others from the friendship group and they do not display these negative traits of behaviour that he does.