the closer you are the deeper the pain when they inexplicably remove themselves, ghost you, or worst of all betray your confidences
sometimes it’s political - ie they are friends with this person so cannot be friends with you, eyeroll, many like this when we had primary school age children, then extends
to more adult friendships, still exercising the politics of the playground
there are takers who are not rumbled for years until they overdo it :
there are jealous husbands, had a few of those, preventing friends from meeting up,
I had a friend who used me constantly for childcare until MY husband pointed it out,
one who I was friends with for 10 years, wanted me to look after her disabled husband while she went off for a few days to see an ailing ‘friend’ who she hadn’t seen since they were at school, (this was so bizarre and weird)
one who told my stalker where I had moved to, caused no end of problems
then they wonder why we go cold on them
mostly though there is always a life on a relationship, they are of their time, so that good friends are left behind when we move counties/countries, our situations change, divorce etc.,
one dumped me when I left my husband for eg, I was her bridesmaid, had children the same age, she didn’t want to know - judgemental
and those associated with boyfriends, husbands family, sisters in law, would like to stay in touch, knowing it is better if we don’t
looking back now, there is so much I just wouldn’t put up with, tolerate,
make excuses for and I’m annoyed with my younger self for doing so
its a minefield, be careful, keep a journal, then its out of your head on the page/folder on your laptop, safer and better than the faithless friend who unbeknown to you is repeating everything you told her to the town gossip