Fifty. That is the average number of hours researchers have found it takes to move someone from stranger to casual friend. Most adults haven't spent fifty unplanned hours with anyone new in years. Not decades. Years. And yet almost everyone over thirty will tell you they have plenty of acquaintances and almost no one they'd call at midnight.
Childhood friendship didn't build character — it built on logistics, and the logistics were never yours to control. School put you in the same room for six hours a day. Sport put you on the same pitch every weekend. The friendship felt effortless because the infrastructure was doing the work. Adulthood strips that infrastructure away and replaces it with nothing, and most people interpret the resulting silence as evidence that they've become harder to love, not that the mechanism changed.
Childhood friendship didn't build character — it built on logistics, and the logistics were never yours to control.
The writer C.S. Lewis described friendship as the relationship that has no survival value but gives value to survival. He was reaching for something philosophical, but the practical observation buried in it is sharper: friendship is the one bond that no institution enforces. Marriage has ceremony and law. Family has biology. Friendship has only the choice to keep going, made again and again, by both people, without a single external prompt.
Here is where this lands for most people. You are in the kitchen, reheating something, scrolling past a photo someone posted from a trip they took. You think: I miss her. Then you think: I should message her. Then you put your phone face-down, because you're not sure what to say, and the pan needs watching, and there's no urgency. That moment — that specific, flickering, pan-on-the-hob moment. Is the entire architecture of adult friendship playing out in real time. Félix noticed it happening every few weeks before he started treating the impulse like a appointment he'd already agreed to keep.
You will not accidentally end up with close friends the way you did when you were eleven. The proximity is gone. The only thing left is the decision to go first, and to keep going first, longer than feels reasonable.