hellloo friend..

i sent a few of 'hellos' to some old friends..
do you know what did their reply ?

1 didnt reply my message..
*i remember (s)he said, "be in touch, will you!!"*

1 replied my message, nicely..
*i posted it here*

1 didnt acknowledge my 'add as a friend' invitation
*maybe (s)he read a 'an enemy has invited you' message*

1 replied, in such a almost-obsolete time
*i know (s)he is a everyday-i-check-my-inbox person*

1 didnt reply my message..
*but (s)he then went to see me, instead*

so, which category a friend is?
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