Mariah Carey - Hate U chords

I dont know what people are hearing when they found their chords but this sounds 
pretty accurate to me! =)
 Capo on third fret, and its C,D,Em, and G. You can finger-pick or just use a 
simple strum pattern and it works perfectly. I hope you enjoy!! <3
[ Tab from: http://www.guitaretab.com/m/mariah-carey/274431.html ]
    C
Once upon a time
    D
We swore not to say goodbye
    Em
Something got a hold of us
     Em
And we changed
    C
And you, sat alone in pride
    D
And I, sat at home and cried
    Em                                G
How'd our, fairy tale just end up this way?
    C
We went round for round
    D
Til' we knocked love out
    Em
We were laying in the ring
    G
Not making a sound
    C                           D
And if that's a metaphor of you and I
    Em                     G
Why is it so hard to say goodbye?.....

 and its basically the same pattern throughout the entire song =)