friendship definition

how you define friendship??

do you need to meet everyday??
do you need to call each other every now and then??

it's weird. i've seen right in front of my eyes that you thought you know this person well and you treat the person as friend yet just because you seldom keep in touch (the way that this person wish to .. i dunno .. maybe need to meet each other all the time?? :P ) and this person treats you like stranger .... it's more complicated than love relationship ... i'm happy that i still have a bunch of friends whom i don't normally meet nor call and yet we can still be friends. am i lucky or what??? they even understand my situation when i explained to them y i can't meet them for gathering/wedding dinner. love them so much for being understanding.