Who the hell is that friend? My friend is someone who is completely integrated in our lives, there is always for us, could always entertain at a time when we are sad, and could always say things that can not be said other people.
But remember, the best friend is still a human being, which is sometimes wrong, sometimes wrong, have their own interests, and has their own life. What we need to do is how we could understand each other and understand each other, because that's really the core of a friendship.