Verse:
G              D  
You change your mind, 
Am                 C
Like a girl changes clothes,
etc. (the same for all the verses)

Chorus: 
G             
Your hot then your cold
D
Your yes then your no,
Am
Your in then your out,
C
Your up then your down
etc. for whole chorus

Verse

Chorus

Bridge:
Em          C
Will someone call the doctor
G             D
I got another case of bipolar
etc......
[Pluck or strum slowly]
G                D
You change your mind,
Am         C 
Like a girl changes clothes

Chorus a couple of times and then your'e good =]

Enjoy xx.