A long-distance friendship survives on patience: late replies, time zones, and choosing each other anyway.

Closeness over distance runs on a slower clock, and the slowness is not a sign it is fading. Replies take days because lives are full and time zones refuse to cooperate, so the usual evidence of friendship is simply unavailable. What holds it together is both people choosing it again and again without much immediate reward.

Send something this week to one person far away, without waiting for your turn. Let late replies mean nothing, and say that out loud so they can stop apologising. Put one real call in the calendar rather than hoping a conversation happens by accident.