This song sounds really good acoustic :) You can play all Am as D f you like but i 
thought Am sounded better personally ENJOY :) x

CAPO 2

G       Am                         Em   C
You say that I’m messing with your head
G                Am                    Em     C
All ‘cause I was making out with your friend
G            Am                    Em    C
Love hurts whether it’s right or wrong
  G          Am                           Em  C
I can’t stop ‘cause I’m having too much fun

       G
You’re on your knees
Am                 Em       C
Begging “please stay with me”
    G               Am                     Em   C
But honestly I just need to be a little crazy!

G                     D
All my life I’ve been good, but now
Am              C
Oh I’m thinking what the hell
G                Am
All I want is to mess around
    Em             C
And I don’t really care about
G
  If you love me
Am
  If you hate me
Em                  C
  You can’t save me baby, baby
G                     Am
All my life I’ve been good, but now
Em   C
Woah what the hell!

G      Am     Em    C
  What? What? What? What the hell!

G            Am                    Em    C
So what if I go out on a million dates?
    G             Am               Em   C
You never call or listen to me anyway
    G          Am                       Em  C
I’d rather and sit around and wait all day
      G            Am                          Em  C
Don’t get me wrong I just need some time to play
 
      G
You’re on your knees
Am                 Em       C
Begging “please stay with me” (la, la, la)
    G               Am                     Em   C
But honestly I just need to be a little crazy! (CRAZY !!)

G                     Am
All my life I’ve been good, but now
Em              C
Oh I’m thinking what the hell
G                Am
All I want is to mess around
    Em             C
And I don’t really care about
G
  If you love me
Am
  If you hate me
Em                  C
  You can’t save me baby, baby
G                     Am
All my life I’ve been good, but now
Em   C
Woah what the hell!

G  D  Em C

G                       Am   
La, la, la, la, la, la, la, la, la
Em    C
Woah, woah… (x2)
G       Am                          Em
You say that I’m messing with your head, boy
C                      G
I like missing in you man yeah
Am                      Em
I am messing with your head
          C
When I'm messing with you in bed

G                     Am
All my life I’ve been good, but now
Em               C
Oh I’m thinking what the hell (what the hell)
G                Am
All I want is to mess around
    Em              G
And I don’t really care about (don’t care about)

G                     Am
All my life I’ve been good, but now
Em               C
Oh I’m thinking what the hell
G                Am
All I want is to mess around
    Em              G
And I don’t really care about
G
  If you love me
Am
  If you hate me
Em                  C
  You can’t save me baby, baby (if you love me)
G                     Am
All my life I’ve been good, but now
Em    C
Whoa, what the hell ?!
G       Am                       Em      C                       G
La, la, la, la, la, la, la, la, la, la, la, la, la, la, la, la, la !