This was a request, so here it is:) 
Not perfect but it's something to work on. I kept out some of the pull-offs, cause 
they are not very easy, and if you can do them, you can certainly listen to the 
song and know where they are :)

Chords
   G   G7 Cadd9 Em7
e|-3---3---0---0-|
B|-3---3---3---3-|
G|-0---0---0---0-|
D|-0---2---2---2-|
A|-2---0---3---2-|
E|-3---1---x---0-|


Capo on 5th fret

G
G
I helped you find her diamond ring 
G                           G7      Cadd9 
You made me try it on and everything
G
Tomorrow you both say ?I do?
G                                        G7    Cadd9
I?ll be there cause that's what best friends do

Em7               Cadd9    G             D
I should win an Oscar, best actress in a show
Em7              Cadd9        D                G
You always see me smilin', little do you know

   Cadd9 G       Cadd9 G
I'm lying, I'm a liar
           Cadd9 G      D
The biggest liar in the world
     Cadd9 G     Cadd9 G
I?m crying, I'm crying
           Cadd9 G      D    Cadd9
Like I've never cried before


G
I know you always heard me say
G                                 G7   Cadd9 
You'll meet the perfect girl one day
G
The night you called and told me the news
G                              G7      Cadd9 
I said I couldn't be more thrilled for you

Em7               Cadd9    G             D
This might be funny timing, probably doesn?t matter now
Em7              Cadd9        D                     G
I never thought I?d say this, but I just figured out


   Cadd9 G       Cadd9 G
I'm lying, I'm a liar
           Cadd9 G      D
The biggest liar in the world
     Cadd9 G     Cadd9 G
I?m crying, I'm crying
           Cadd9 G      D
Like I've never cried before


Cadd9
If I ever tell you
        Em7
That I've found the perfect man
           G
That he's everything I ever wanted
             Cadd9
Just as I had planned


   Cadd9 G       Cadd9 G
I'm lying, I'm a liar
           Cadd9 G      D
The biggest liar in the world
              Cadd9 G        Cadd9 G
Cause I?ll be crying, I'll be crying
           Cadd9 G      D    Cadd9
Like I've never cried before


G
I helped you find her diamond ring 
G                           G7      Cadd9 
You made me try it on and everything