There are two guitars in this song: rhythm and lead. There is a great tab on here for 
the lead, but these are the chords for the rhythm guitar. Extremely simple, only three chords.

Standard tuning

No capo

Chords are played as follows:
D:   xx0232
Em7: 022030
G5:  3x0033

[Intro]
D, Em7, G5 (x2)

[Verse 1]
D          Em7     G5
 Don't you know we lost?
D         Em7                   G5
 Sunk so low, we just called it off
        D  Em7               G5
How an ordinary moment gets tossed
             D  Em7           G5
A more than ordinary woman's cost

[Instrumental]
D, Em7, G5 (x2)

[Verse 2]
Thought I understood
Fought to buy the whole neighborhood
You ought to try, "I told you so", it feels good
Bought it high, and sold as low as I could

[Pre-Chorus]
  D     Em7
Believe me
        G5
Believe me
  D     Em7
Believe me
        G5
Believe me

[Chorus]
            D     Em7
It's come undoooooone
     G5
Doooooone
            D     Em7
It's come undoooooone
     G5
Doooooone

[Bridge]
D                     Em7
 Have another look, another look around
                    G5
Have another look around
D                     Em7
 Have another look, another look around
                    G5
Have another look around

[Instrumental]
D, Em7, G5 (x2)

[Verse 3]
I can't stay too long
Can only play a handful of songs
How a melody can make up your mind
Take a memory and leave it behind

[Pre-Chorus]
Believe me
Believe me
Believe me
Believe me

[Chorus]
It's come undone
Done
It's come undone
Done
It's come undone
Done
It's come undone
Done

[Coda]
D, Em7, G5 (x4)