Late-night talks with your sibling through the wall won’t last forever. Someday you’ll live in different cities.

Living in the same house gives you a kind of access nobody arranges or appreciates: the pointless midnight conversation, the comment through a doorway, knowing what sort of day somebody had without having to ask. It does not end in a falling out. It ends with a lease somewhere else, and whatever replaces it has to be scheduled.

Say one real thing to your brother or sister this week instead of only the usual noise. Ask what they are actually worried about. You are both building the version of this that survives different cities.