Friend?

Who are friends?
How to say that you are my close friend?
How close?
Do you know me?
How much you know about me?
Apparently or deeper?
No one will know me to the deepest except me and God.
However, sometimes i don't even know myself.

FRIEND
what does it mean?
i doubted.
People said friend is so and so, close friend is so and so, best friend is so and so.
How i know how true are those so and so? All these so and so are said by human, by comparison!

A person whom you know in class, whom you always mix around,
if you stayed together with, you found that the person is not the one whom you know in class, but it's someone else.

Cover myself with a protective shield, don't let the inner me to be naked,
I will be hurt. and the PAIN is not localized, is not diffused, it cant be describe by words!