My version of the chords for this song is similar to the one above except for the chorus 
where I think it's pretty different. Up to you to decide which you prefer :D The chords 
are pretty basic except for D/C# which is:

D/C#
e--2----|
B--3----|
G--2----|
D--0----|
A--4----|
E--0----|

Verse 1
D                                      D/C#
Filling up my empty days with red wine wonder what you think of me?
G                                   A
Lying in the grass alone and wasted nothing's how it used to be
 D                                        D/C#
I wanna be the first to call and tell you yesterday I heard the news
                                          A
I hear you oughtta be congratulated so I guess that's what I'll do

Chorus 1
       D                      A
I'm so happy for you I could cry
          G                  D                 A
Yeah, I'm so elated cross my heart and hope to die
        Bm          F#m               G               Em
I don't think about you every night before I close my eyes
       G             A             D
I'm so happy for you baby, I could cry.

Verse 2
D                                       D/C#
Listen to the sound of my head pounding wish that it was make-believe
G                                    A
Praying for the skies to open up and wash away your memory
D                                       D/C#
I can walk around with a pretty face on even when I'm black and blue
G                                     A
What's the point in telling everybody I'm not over you.

Chorus 2
       D                      A
I'm so happy for you I could cry
          G                  D                 A
Yeah, I'm so elated cross my heart and hope to die
        Bm          F#m               G               Em
I don't think about you every night before I close my eyes
       G             A
I'm so happy for you baby, I could


A             Bm              G
Cry about the love we used to have
A                Bm           A
Cry that I won't ever get you back


D   D/C#   G   A

No chord
Filling up my empty days with red wine
Wonder what you think of me?

       G                      D   A
I'm so happy for you I could cry
          G                  D                 A
Yeah, I'm so elated cross my heart and hope to die
    G                       D         A
I'm so happy for you so, so happy for you
        Em              Bm          F#m               G
I don't think about you every night before I close my eyes
       Em            G(Let ring)
I'm so happy for you baby, I could cry.