Don't you remember?

''However complicated our friendship got, i shouldn't have let it go, i shouldn't have let you go. BFF means best friend forever.''

''My whole life is falling apart.''
 ''So we'll build it!''

''We're sisters, you're my family, what is you is me, there's nothing that you could ever say to make me let go.''

''You're supposed to be my best friend.''