Rarer still are the true forever best friends, those who are by your side for decades on end—through jobs, moves, relationships, fights, losses, and life stages—and may even come to feel like family.

Friendship is one of those things that can really make or break your day. A good friend is like a lifeline, always there when you need them the most. But sometimes, it's hard to tell if someone is ...

Forbes contributors publish independent expert analyses and insights. Actresses Irene Maiorino and Alba Caterina Rohrwacher on the television series "My Brilliant Friend," based on a novel by Elena ...

America has a loneliness problem — and making friends as an adult is harder than ever. Amy Robach and T.J. Holmes think they've cracked the code.