1.
They're the first to know when something happens and vice versa
2.
You have so many inside jokes that you can't really explain them anymore, they just are
3.
They're the only person you can stand to talk on the phone with for a long time
4.
Whenever people talk shit about your friend, you aren't afraid to fight to the death for them
5.
Their birthday is more important to you than your own
6.
You can recall obscure facts about them quicker than you can basic facts about yourself
7.
You discuss elaborate, unrealistic scenarios all the time
8.
You have the same exact tastes in pretty much everything
9.
You give each other the most encouraging advice ever
10.
You could talk for hours on end about absolutely nothing and absolutely everything
11.
You make them decide things for you when you can't make up your mind
12.
Seeing them or talking to them brightens your whole day
13.
You gossip all the time about everything and everyone
14.
You trust them with all your secrets
15.
They know more about you than anyone ever probably should
16.
They're the only person who can comfort you when you're sad
17.
And the only person you'd ever let see you cry
18.
You often worry that they'll make a new friend who's better than you
19.
But you know they'll always love you and you can always be yourself around them
20.
Because at the end of the day, they'll always be your BFF and you'll love them forever and ever