I know that these are not 100% correct, but it sounds decent to me. And it's easy.


G
Hey hey you you
C
I don't like your girlfriend
G
No way no way
Em
I think you need a new one
G
Hey hey you you
C                          Em
I could be your girlfriend

G
Hey hey you you
C
I know that you like me
G
No way no way
Em
You know it's not a secret
G
Hey hey you you
C                            Em
I want to be your girlfriend

G
You're so fine I want you mine you're so delicious
C
I think about you all the time you're so addictive
Em                                                G
Don't you know what I could do to make you feel alright?
G
Don't pretend I think you know I'm damn precious
C
And hell yeah I'm the motherfucking princess
Em                                          G
I can tell you like me too and you know I'm right

Em
She's like
G
So whatever
Em
And you could do
C
So much better
Em                G            D
I think we should get together now
(holding D)
and that's what everyone's talking about

G
Hey hey you you
C
I don't like your girlfriend
G
No way no way
Em
I think you need a new one
G
Hey hey you you
C                          Em
I could be your girlfriend

G
Hey hey you you
C
I know that you like me
G
No way no way
Em
You know it's not a secret
G
Hey hey you you
C                            Em
I want to be your girlfriend

G
I can see the way I see the way you look at me
C
And even when you look away I know you think of me
Em                                               G
I know you talk about me all the time again and again
G
So come over here and tell me what I wanna hear
C                                Em
Better yet, make your girlfriend dissapear
Em                                        G
I don't wanna hear you say her name ever again (because)

Em
She's like
G
So whatever
Em
And you could do
C
So much better
Em                G            D
I think we should get together now
(holding D)
and that's what everyone's talking about

G
Hey hey you you
C
I don't like your girlfriend
G
No way no way
Em
I think you need a new one
G
Hey hey you you
C                          Em
I could be your girlfriend

G
Hey hey you you
C
I know that you like me
G
No way no way
Em
You know it's not a secret
G
Hey hey you you
C                            Em
I want to be your girlfriend

(no chords, just clapping)
In a second you'll be wrapped around my finger
Cause I can, cause I can do it better
There's no other, so when's it gonna sink in?
She's so stupid, what the hell were you thinking?

In a second you'll be wrapped around my finger
Cause I can, cause I can do it better
There's no other, so when's it gonna sink in?
She's so stupid, what the hell were you thinking?

G
Hey hey you you
C
I don't like your girlfriend
G
No way no way
Em
I think you need a new one
G
Hey hey you you
C                          Em
I could be your girlfriend

G
Hey hey you you
C
I know that you like me
G
No way no way
Em
You know it's not a secret
G
Hey hey you you
C                            Em
I want to be your girlfriend

chorus is repeated a few times with "hey hey" and "no way" over it
G
Hey hey
Em
No way
G
Hey hey
Em
No way
C
No way
G
Hey hey

I know the last little part is confusing and hard to understand, but listen to the song 
you'll get. The chords can change around a little bit.