How well do you know the person next to you?

I know what to do now! I reread the instant message that asked me if we knew each other and it made me thinking. Do I know this person, Did I ever know this person? What does knowing a person mean? Do you say that you know someone just because you've been friends for a long time? Can you ever really KNOW a person? Inside and out? Because, this year there's been a lot of cases where I thought I knew someone but then all of a sudden I get a slap in the face and that someone turns out to be a complete idiot.

99% of my friends have dissappointed me and wronged me in so many ways. So does this mean that the person changed or does it simply mean that I never really knew her/him. I came to the conclusion that people never change, it just so happens that in some moments the person next to you, whom you thought you knew, shows her/his true colors and turns out to be someone you never really knew!

So my answer to you H is that No I don't know you, neither do I want to! I'm not going to reply and ask what these two people meant because whatever they meant simply doesn't matter anymore!