Close friends are our besties, the people in our inner circle. These are the friends that we bond with instantly, talk to often, share our struggles with, and confide our deepest darkest fears to. These are often the friends that our values most closely align with, Melewski explains. Lifelong friends are the people we’ve been friends with since childhood. These are often the friends you can be your most authentic self with, says Melewski.
These categories aren’t necessarily permanent, fixed, or as clear-cut as we might want them to be—and that’s OK, says Melewski. For instance, he explains that an acquaintance can become a close friend or a work colleague who starts off as a casual friend can become a best friend with time. “On the other hand, knowing someone from childhood doesn’t always guarantee an intimate connection. Childhood friends need more than history; they require mutual support and effort.”

