Yes,3 or 4- although not so much fallen out as they just cut contact with us....I'm 53.
Bestie at school, the day after we left school I rang her to arrange to meet up. No answer, rang many more times, no answer,left messages, no call back, nothing. Never heard from her again, found out a few years ago that she'd died 20 years ago.
When we moved in where we are now, we made friends with our neighbours. Same age as us, ended up being good friends for several years. Went out for meals together, to the theatre, even on holiday. We dog sat for them, they babysat for us. They were even legal guardians for our son. They were struggling to conceive, and I even drove the husband to the fertility clinic one morning with a sperm sample in his pocket! I then had a big birthday party at home and introduced them to some old friends of mine and they shared their table for the evening.
After that, they slowly moved away from us and onto these other friends- doing exactly the same things with them as they did with us- holidays, meals out etc etc. In the end, they completely stopped talking to us, and even rang us one evening and asked us to keep the noise down when we had some old friends visiting (despite the fact that their dog barked constantly when they weren't in which was a pain but we never complained about, and that their surround sound was so loud sometimes that we couldn't hear our own TV...) as we were laughing too loud. In the end they sold their house- we didn't know anything about it until she knocked on the door and asked me to move my old car ( that they'd had numerous lifts in) from out the front as they were having estate agent pics taken and didn't want that thing in it! Haven't a clue where they moved to,they just left without saying a word. Within 24 hours, they had unfriended and blocked us,and any mutual friends on Facebook. I'll never know the reason why- we never had a row or fell out- however, another neighbour further up the road told us that they were known for being your bestie then dropping you like a ton of bricks when someone else came along.
Hubby's best friend from when they were 4. Best man at each others weddings, rode motor bikes together, pub every week bbq's etc. I knew his wife, we all got on well, kids the same age etc. Couple of holidays together. BF had another group of friends who were better off than us, although we were always invited to parties, bbq's etc. BF seemed to have a man crush on one of them T. Hung onto every word that T said, agreed with everything he said, etc etc. BF had a Nov 5th bbq on year, we were all invited.T was not my favourite person- went on a fair bit about money, how much his renovations were costing him etc etc. His older son made a vile pass at my daughter-she was only 15- so my hubby had a quiet word with him on the side. Particularly as she'd turned him down and he called her a prick tease! Don't know what the son told his dad T, but at the end of the evening, T manipulated an argument with my hubby- in the back garden whilst his wife and kids were out the front waiting in the car so they didn't hear any of it-he was pretty nasty to hubby,picking on his disabilities and calling him a shit dad. While all this was going in BF completely ignored it and pretended to tidy up,although he could clearly hear it.His wife was passed out drunk so didn't hear it either. Hubby never heard from BF again and despite me being friends with his wife for 7 years, she never got in touch with me again, preferring to believe T's side of things. We think T was jealous of how close hubby and his BF were and wanted us out of the picture!
Hubby also lost friends when he became disabled and couldn't do cheap building work for them....
We have very few friends now....less to shit on us!