This is my first tab. I think it's very simple and pretty accurate! Enjoy :)
Capo on 4th fret

[Verse 1]
C
We've got a bit of love/hate
Am
You take me to the edge then you hit the breaks
C
I say it's over one day,
Am
But then I'm calling back begging you to stay
Dm                                  G
We make up then we break up all the time


C                                         Am
I'll say I hate a song, then you'll go request it the whole night long
C                                              Am
Some people say it's so wrong but even when we fight, It'll turn me on
Dm                                  G
We make up then we break up all the time


[Chorus]
C
We're like na na na
                Am 
Then we're like yeah yeah yeah
            C
Always like na na na
                Am
Then we're like yeah yeah yeah


      Dm
No we can't make up our minds
              G
Cause when we think we've got it right
      C
We go na na na na (na na na)
Am
Na na na (na na na)


[Verse 2]

C
You wanna party too late
                  Am
But when I do the same all you do is complain
C
You know that it drives me insane
                    Am
But when I get with you girl you make it okay
Dm                                  G
We make up then we break up all the time


[Chorus]
C
We're like na na na
                Am
Then we're like yeah yeah yeah
            C
Always like na na na
                Am
Then we're like yeah yeah yeah

      Dm
No we can't make up our minds
              G     
Cause when we think we've got it right
      C
We go na na na na (na na na)
Am
Na na na (na na na)

[Break]
 C    Am    C    Am    Dm    G    C    Am
(just like  normal chorus)



[Chorus]

           C
We're like na na na
                Am
Then we're like yeah yeah yeah
            C
Always like na na na
                Am
Then we're like yeah yeah yeah

           C
We're like na na na
                Am
Then we're like yeah yeah yeah
            C
Always like na na na
                Am
Then we're like yeah yeah yeah
      Dm
No we can't make up our minds
              G
Cause when we think we've got it right
      C
We go na na na na (na na na)
Am
Na na na (na na na)