Christina Perri - Bang Bang Bang chords

This is actually supposed to be the Piano chords but I think they sound fine on 
the guitar. It's not completely idiot-proof, but I wanted to make it all fit on 
one page. Just listen to the song and it's pretty easy to figure out.

Bang Bang Bang
By Christina Perri

G G Bm Em D C C

G                                         Bm
All my life you know I haven't been very love strong
             Em                     D                     C
there's been so many fights that I fought and I never won
        G                                            Bm
So I decided that I should just give up in trying to right your wrong
    Em                         D                        C
And word on the street that is she did to you what you did to me...
[ Tab from: http://www.guitaretab.com/c/christina-perri/257491.html ]
[Chorus]
C
5, 4, 3 2 1
G
Bang, bang, bang, boy!
             Bm
You're goin' down, down, down, boy
       Em
To the ground where you left my heart to bleed
C
Bang, she shot you
                      G
Karma tastes so sweet

G Bm Em D C C

      G                                      Bm
So unfortunately for girls like me there are more like you
Em                       D                         C
Bending and breaking the rules that we're making exceptions too
     G                                Bm
But how does it feel, to swim in your own tears
    Em                      D
You lied and you lied and I died and I died
         C
And now you know why...

[Chorus x2]

G G Bm Em D C C [x2]

[Chorus x3]