Friend: calls your parents by mr. and mrs.
Best friend: calls your parents dad and mom.
Friend: has never seen you cry
Best friend: has always had the best shoulder to cry on
Friend: never asks for anything to eat or drink
Best friend: opens the fridge and makes herself at home
Friend: asks you to write down your number.
Best friend: they ask you for their number (cuz they can't remember it)
Friend: borrows your stuff for a few days then gives it back.
Best friend: has a closet full of your stuff
Friend: only knows a few things about you
Best friend: could write a biography on your life story
Friend: will leave you behind if that is what the crowd is doing
Best friend: will always go with you
Source: From my best friend