What Makes a Friendship Last Forever?
Briefly

Shared traits, interests, and backgrounds significantly enhance the durability of friendships; the more commonalities friends share, the stronger the relationship, according to Dunbar.
To form enduring friendships, people require a substantial time commitment—with at least 300 hours spent together being necessary to establish true best friends.
Research shows that expressing deep thoughts and emotions between friends fosters stronger bonds, contrasting with relationships that stay at a surface level.
Read at time.com
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