Best Friend?

Is it just that easy? Is it?
You called me your best friend,
Said I was the best one, the truest one
You've ever had.
You cried to me when no one else would listen.
You held me up when everyone else brought me down.
You thanked me for never giving up on you,
So why are you giving up on me?
Me: your best friend.
You're my family. What happened to family comes first?
What happened to family over everything?
I thought you cared about me
Just as much as I care about you.
I'm not sure what to think now.
You trusted me even though everyone has always
Let you down.
So why don't you trust me now?
Was it that easy to forget your best friend?

You said you would choose me in every lifetime.
Why'd you stop choosing me in this one?