You

Who am I
I thought I knew
But that was back
Before you

You let me down
Tossed me aside
But I refuse
I will not hide

I’m back up now
I’m off the floor
The scars you left
Remain no more

You are done
But I am not
With all the heartache
You have wrought

You're going down
Like I once did
I'll finish you
I do not kid

Surrender now 
Or face the wrath
Of a girl
Who's heart's in half