What's a soul mate?
It's uh... Well, it's like a best friend, but more. It's the one person in the world that knows you better than anyone else. It's someone who makes you a better person. Actually, they don't make you a better person, you do that yourself because they inspire you. A soul mate is someone who you carry with you forever. It's the one person who knew you and accepted you and believed in you before anyone else did or when no one else would. And no matter what happens, you'll always love them. Nothing can ever change that.
(c) Lilly's question for Dawson (Dawson's Creek, Season Finale)
Well, it seems to me that the best relationships - the ones that last - are frequently the ones that are rooted in friendship. You know, one day you look at the person and you see something more than you did the night before. Like a switch has been flicked somewhere. And the person who was just a friend is... suddenly the only person you can ever imagine yourself with.
(c) Gillian Anderson