(optional) Intro/verse riff/chord*:
    A5        A5    
e | ---------------0--0-0-0-0-- | 
B | ---------------1--1-1-1-1-- | 
G | --2---2-2-2-2--2--2-2-2-2-- | 
D | --2---2-2-2-2--2--2-2-2-2-- | 
A | --0---0-0-0-3--3--3-3-3-3-- | 
E | --x---x-x-x-x--x--x-x-x-x-- | 

-Just listen to the song to figure out the strumming rhythm of this part.
*This makes playing the Am chord repeatedly through all the verses sound
 like it almost still has the bass riff from the original song under it, which goes like this:

e | --------------------- | 
B | --------------------- | 
G | --------------------- | 
D | -------2/7-0-7-0-7--- | 
A | -0--3---------------- | 
E | --------------------- | 
 
Anyway,

Verse:
A5
 Father says it, mother says it
A5
 Sister says it, brother says it
A5
 Uncle says it, Auntie says it
A5
 Everyone at the party says it
             G5
Babe, I'm on fire
            A5
Babe, I'm on fire


Chorus:
G5                    F5
Hit me up, baby, and knock me down
G5                          F5
Drop what you're doing and come around
G5                          F5
We can hold hands till the sun goes down
        F5
Cause I know
G5    F5
That you
G5   F5
And I
G5   F5
Can be
G5 F5 ~~~ (pause)
Together
                 A5
Cause I...love...You

And go back to playing the verse [Am] (with the Am/C or otherwise)