Had a brief chat with a couple of "besties" last night and we were getting a bit soppy (we each go back a long way with each other) and one of them said something which is worthy of being repeated. She said:
"all we want in a friendship is to feel like we can be ourselves, that the other person accepts us for who we are and we can trust them. "
That's a paraphrase...but you know she's pretty much hit the nail on the head. And if we're really honest, well when we find that with someone it's really special and something to be treasured.