who do you think you are?!

I know I can't take one more step towards you
'Cause all that's waiting is regret
And don't you know I'm not your ghost anymore?
You lost the love I loved the most

And I learned to live, half alive
And now you want me one more time

And who do you think you are?
Running around leaving scars
Collecting your jar of hearts
And tearing love apart