Reason, season, or lifetime. Common line. Usually said after a friendship is already over, which makes it a way to feel okay about drift. Try it the other way. Ask it before, not after. Twenty years in emergency medicine gave me a lot of friends. Real ones. We saw things together. But almost all of it was proximity. Same department, same nights, same shared load. Take away the building and the phone stops ringing on both ends. Not anyone's fault. Nobody chose it. So that was a reason friendship the whole time, and I was counting it as a lifetime one. Friendship after fifty is the domain most men let quietly rot. Nobody notices, because work fills the space until it doesn't. Here's where I actually am. I am 55, planning a move that puts an ocean between me and most of the people I know. Building real friendship from zero at this age in a new city / country will be a challenge. Run the audit on your own list. Which ones were the building? And if you have built a real friendship after fifty, in a new place, from nothing, tell me how you did it. That is a genuine ask.