Capo: 3

Chords used:

   E A9 E7M4 F#m7
e--0---0----0---------0------- | 
b--0---0----0---------0------- | 
g--1---2----4---------6------- | 
d--2---2----4---------6------- | 
a--2---0----2---------4------- | 
E--0---0----0---------0------- | 


Chorus:
E A9 E7M4 (slides into) F#m7
Whole chorus until the last line.
"that's all I want to do-E(chucks)E7M4(chucks)WOO!"
Then you repeat the same chord progression 3 times, then the E E7M4 chuck thing again.
(Except the first time through at the very beginning of the song, you strum E 
once, then strum muted until the chucks) 

& the verses are E F#m7 E7M4.
I think he plays it Asus2 E F#m7 E7M4 with the Asus2 really fast,
but it's not really necessary. 
But yeah! So, I hope that helped. Sorry it's not the whole thing... But here's the lyrics!


Katie baby,
Are you ready for loving me?
Oh cuz I?m ready for loving you,
That?s all I want to do

Woo!

She was so caught up on the new trends,
I was caught on her, Can?t even pretend,
That I?m obsessing and it?s so obvious,
I find it funny how I find myself falling in love,

She says the best things at the right time,
She?s got me wrapped around her finger,
I can?t unwind,
I swear it happens every time,
Cuz I never thought that she?d be mine

Katie baby,
Are you ready for loving me?
Oh cuz I?m ready for loving you,
That?s all I want to do

She was so fresh, smiled bright as the stars,
Dressed to impress that girl she caught me off guard,
And oh, oh let?s play the part where I fall so hard,
For you and only you can,
Say the best things at the right time,
She?s got me wrapped around her finger,
I can?t unwind,
I swear it happens every time,
And I don?t know how to define

Katie baby,
Are you ready for loving me?
Oh cuz I?m ready for loving you,
That?s all I want to do

And whoa, is this happening?
Is this everything coming true?
Cuz it?s happening to me and you

Katie baby,
Are you ready for loving me?
Oh cuz I?m ready for loving you,
That?s all I want to do

Woo!

Katie baby,
Are you ready for loving me?
Oh cuz I?m ready for loving you,
That?s all I want to do

That?s all I want to do,
That?s all I want to do,
That?s all I want to do,
Cuz Katie I?m in love with you