There are people you can talk to and things are fine, but you wouldn't want to tell them private things or be too dependent on them. People who you could never see again and be fine, but do like to see.
But then people who are real, true friends, they take on an importance. Where you'd be sad if you couldn't see them and they become special to you.
Though, you know, people can only reject you if you let them. How much you care for that person, how important they are to you, they're the ones who can reject you more than anyone else.