The Saturdays - Promise Me chords

sup, the C at the beginning of the chorus is some sort of variation of C, and then later 
on in the first line it's a normal C, i can't work out what the variation is so sorry 
in advance if it doesn't sound right!




Intro

Am C E



Am (keep hammering on and off to get a rhythm, do this for all chords including intro)
So here we are again
I'm almost giving in
I'm over-listening about
Who you with or where you've been


C
I got drunk with my friends
A list from one to ten

E
Are you the man that I need, I need? (No)

Am
If I was doing this
Would you put up with this?
Do what you're mama said

C
Love or leave alone
I'm gone

E
Cos all you ever do

C << STRUM ONCE AND THEN AGAIN ON WORLD
You promise me me me the the the world

             G < STRUM ONCE
You promise never to let down a girl


C
But now I know

              G
It's time to go


             Am       C
Tonight I'm gonna go

G
And party party go

Dm
Without you

Am          C
I'm gonna go

   C           G
And party party go

Dm
Without you

Am
You womanizing games
Although you've say you've changed (No)
I guess I always be your option not priority


C
The best you never have
One day you'll wish me back

E
There won't be no one like me, me (No)

[ Tab from: http://www.guitaretab.com/t/the-saturdays/315891.html ]
Am
If I was doing this
Would you put up with this?
Do what you're mama said

                C
Love or leave alone
I'm gone

E
Cos all you ever do


C
You promise me me me the the the world

              G
You promise never to let down a girl

C
But now I know

              G
It's time to go


Dm               C
Tonight I'm gonna go

                G
And party party go

Dm
Without you

Am              C
I'm gonna go

                 G
And party party go

Dm
Without you


Am         C
But you won't get me back

G
You won't find me home alone

Am
Promise this
Promise that

C
But you won't get me back

E
Someone will love what you don't

*dubsteppy bit woop woop*

Am C G C Am C E

C
You promise me me me the the the world

G
You promise never to let down a girl

C
But now I know

G
It's time to go

Am                C
Tonight I'm gonna go

G
And party party go (I'm gone without you, yeah)

Dm
Without you

Am             C
I'm gonna go

G
And party party go

Dm
Without you