friend??

how would a person define the term "F-R-I-E-N-D"?
in fact,
no one could really define it in the reality world.

betrayed??
selfishness??
stinginess??
should i equalize those term to "FRIEND"?

FRIEND tend to take for granted as the relationship get closer,
FRIEND tend to be competitive as the relationship get closer,
FRIEND tend to be jealous as the relationship get closer,
should all this be seen in a FRIEND??

for me,
i really do not know how to define FRIEND.
and i dont not have a GOOD FRIEND,
NOT even one!!