[Verse 1]
Am C
...I know I can't take one more step towards you
G Dm
...Cause all that's waiting is regret
Am C
...And don't you know I'm not your ghost anymore
G F
...You lost the love I loved the most
[Pre-Chorus]
Dm C G
...I learned to live half alive
Dm C G
...And now you want me one more time
[Chorus]
C G
...And who do you think you are
Am
Running 'round leaving scars
F Fm
Collecting your jar of hearts..
C
And tearing love apart
G
You're gonna catch a cold
Am
From the ice inside your soul
F Fm
So don't come back for me....
C
Who do you think you are
[Verse 2]
Am C
...I hear you're asking all around
G Dm
...If I am anywhere to be found
Am C
But I have grown too strong
G F
...To ever fall back in your arms
[Pre-Chorus]
Dm C G
...I learned to live half alive
Dm C G
...And now you want me one more time
[Chorus]
C G
...And who do you think you are
Am
Running 'round leaving scars
F Fm
Collecting your jar of hearts..
C
And tearing love apart
G
You're gonna catch a cold
Am
From the ice inside your soul
F Fm
So don't come back for me......
C
Who do you think you are
[Bridge]
Am E C D
And it took so long just to feel alright
Am E C D
Remember how to put back the light in my eyes
Am E C D
I wish I had missed the first time that we kissed
Am E C D
Cause you broke all your promises
F
And now you're back
E
You don't get to get me back
[Chorus]
C G
...And who do you think you are
Am
Running 'round leaving scars
F Fm
Collecting your jar of hearts..
C
And tearing love apart
G
You're gonna catch a cold
Am
From the ice inside your soul
F Fm
So don't come back for me......
C
Don't come back at all
C G
...And who do you think you are
Am
Running 'round leaving scars
F Fm
Collecting your jar of hearts..
C
And tearing love apart
G
You're gonna catch a cold
Am
From the ice inside your soul
F Fm
So don't come back for me......
C
Don't come back at all
[Outro]
Fm C
Who do you think you are?
Fm C
Who do you think you are?
Fm C (Strum softly and let ring)
Who do you think you are?
Favorite 
I had problems playing the F and Fm chord for this song, mainly because I was playing the same song for 1 hour haha. You can use x3321x for F and xx3111 for Fm. It’s waaay easier.