This was tabbed out entirely by ear, so it may have mistakes. 
However, it sounds pretty good to me. Feel free to leave any tips,
corrections, or comments, as they will be much appreciated!!
I prefer using mostly barre chords for this song, especially for the
G and C pattern in the verses. Open chords just don't seem to fit
the song very well in my opinion. Thank you, enjoy! :)

"Really Don't Care" from Demi Lovato's new album "DEMI," out May 14th.
www.demilovato.com
www.twitter.com/ddlovato
www.youtube.com/therealdemilovato



Intro - [G, C] x 2

G          C              G          C
You wanna play, you wanna stay, you wanna have it all
G             C            G             C
You started messin' with my head until I hit a wall
Em 
Maybe I shoulda known, maybe I shoulda known
C
That you would walk, you would walk out the door, hey!

G           C                G                   C
Said we were done, then met someone and rubbed it in my face
G               C                    G             C
Cut to the punch, she broke your heart, and then she ran away
Em
I guess you shoulda known, I guess you shoulda known
C
That I would talk, I would talk

                 Em        D      G                       Em    D    G
But even if the stars and moon collide, I never want you back into my life
                    Em       D         G         Em      D         G
You can take your words and all your lies, oh oh oh I really don't care
             Em       D        G                      Em   D       G
Even if the stars and moon collide, I never want you back into my life
                    Em      D         G          Em     D           G
You can take your words and all your lies, oh oh oh I really don't care
       Em    D           G
Oh oh oh I really don't care

[G, C] - 2x

G           C           G               C                 
I can't believe I ever stayed up writing songs about you
G           C                  G              C
You don't deserve to know the way I used to think about you
Em
Oh no not anymore, oh no not anymore
C
You had your shot, had your shot, but you let go

G          C                G                C
Now if we meet out on the street I won't be running scared
G              C              G             C
I'll walk right up to you and put one finger in the air
Em
And make you understand, and make you understand
C
You had your chance, had your chance

                  Em        D      G                       Em    D    G
But even if the stars and moon collide, I never want you back into my life
                    Em       D         G         Em      D         G
You can take your words and all your lies, oh oh oh I really don't care
             Em       D        G                      Em   D       G
Even if the stars and moon collide, I never want you back into my life
                    Em      D         G          Em     D           G
You can take your words and all your lies, oh oh oh I really don't care
       Em    D           G
Oh oh oh I really don't care


[G, C] - 4x
(Yeah, listen up)

G         C                 G              C
Hey, hey never look back, dumbstruck boy, ego in tact
G         C
Look boy, why you so mad
G                      C
Second guessin', but shoulda hit that
Em                       
Hey, Demi you picked the wrong lover

Shoulda picked that one he's cuter than the other
C
I just wanna laugh, cause you tryna be a hipster

Kick it to the curb, take a Polaroid picture


                 Em        D      G                       Em    D    G
But even if the stars and moon collide, I never want you back into my life
                    Em       D         G         Em      D         G
You can take your words and all your lies, oh oh oh I really don't care
             Em       D        G                      Em   D       G
Even if the stars and moon collide, I never want you back into my life
                    Em      D         G          Em     D           G
You can take your words and all your lies, oh oh oh I really don't care
       Em    D           G
Oh oh oh I really don't care