Seems to be pretty common - something life changing happens (a break up or divorce usually in my experience anyway) and suddenly people ghost friends they have had for decades right when you would have thought they would have been in the most need of support. It’s happened to me, my husband, my sister in law, my mum, a work colleague - everyone seems to have a story of this and I find it so strange and hurtful.
They are flaky on meeting up, they don’t reply in the group chat, they are suddenly always “busy” and you realise a year or more has gone by without you talking and are you even o anymore?
After a while I suppose it gets too awkward to reach out but I always think it is just so sad.
If you have done this, what made you do it? How do you feel about it now? Do you ever think about getting back in touch, and would you apologise?