[Lucid:]

Espy is scary. Like a soft blankie with a secret knife hidden in it. o.o

I know right, why do people have to think cuddling has to go further? D: It's just nice to have someone there.

I don't think a best friend is someone you necessarily choose, I think it's a person who you make a deep connection with. You care about them and love them no matter what, and they feel the same about you. You can do anything togetheror talk about anything without shame, and trust them totally. And, of course it's totally possible to have more than one "best" friend. They're just better than the average friend, whether you have one of them, or five, or whatever. Or, on the other hand, just because you have friends doesn't mean one of them is "best." It's totally possible to have a bunch of really shallow-relationship'd friends. :P
That's just my interpretation, anyway. I value emotional connection super highly so that's the lens I look at everything through.