The other version is most certainly not right, so here is a closer one
at least.  STANDARD TUNING

Inrto x 2:  G B7 C D7 (end on a final G strum before the pause for verse)

G (320003@1)     B7 (x21202@1)          C (x32010@1)                D7I (xx0212@1)had a moment when I thought I might be wrong,
    G (320003@1)    B7 (x21202@1)         C (x32010@1)      D7But (xx0212@1)Ashley how could it be?
G (320003@1)             B7 (x21202@1)    C (x32010@1)       D7I (xx0212@1)waited on the rooftop all night long,
    G (320003@1)         B7 (x21202@1)       C (x32010@1)     D7But (xx0212@1)you weren't coming for me.
B7 (x21202@1)                            CAnd (x32010@1)now I'm sitting here like a mixed up little kid
B7 (x21202@1)                       CYou (x32010@1)said you wanted me but you never did
G (320003@1)        B7 (x21202@1)      C (x32010@1)                  D7There (xx0212@1)was a moment I thought our love was strong,
    G (320003@1)      C (x32010@1)       GBut (320003@1)now that moment is gone.

G (320003@1)                 B7 (x21202@1)           C (x32010@1)            D7I (xx0212@1)could stand right underneath the window of your room,
G (320003@1)            B7 (x21202@1)         C (x32010@1)          D7Throwing (xx0212@1)rocks I've done it before
G (320003@1)                 B7 (x21202@1)             C (x32010@1)             D7And (xx0212@1)I would love to find a reason to dazzle you with lies,
    G (320003@1)              B7 (x21202@1)      C (x32010@1)       D7But (xx0212@1)I don't have the energy no more.
B7 (x21202@1)                                 CAnd (x32010@1)you never promised anything that you didn't give,
B7 (x21202@1)                             CI (x32010@1)assumed that you'd say yes but you never did.
G (320003@1)         B7 (x21202@1)      C (x32010@1)              D7There (xx0212@1)was a moment my love for you was strong,
    G (320003@1)      C (x32010@1)       G (320003@1)    G (320003@1)      C (x32010@1)  
     Gbut (320003@1)now that moment is gone.  Now that moment is gone.

G, C (strum each chord a few times fast and hard before the lines with just
vocals)

I saw you behind the camera whispering
                    C (x32010@1)      G (320003@1) C (x32010@1) G (320003@1)  C (x32010@1)   Cto (x32010@1)your friends and watching me
CI (x32010@1)fell in love with you there was proved the
                C (x32010@1)   G (320003@1)  C (x32010@1)   G (320003@1) C (x32010@1)   Cfool (x32010@1)that I can often be

C (x32010@1)G (320003@1) C (x32010@1) G (320003@1)  C (x32010@1)(This hard strumming 
C, G pattern continues for a while,
you will have to listen to get this down cause.
Below is the little horn thingy that's playing over the middle C,G stuff
e-------------------------------------------------|
B-------------------------------------------------|
G-------------------------------------------------|
D-0h2-0-5--0h2-0-5-0h2-0--------------------------|
A------------------------3--3--3------------------|
E-------------------------------------------------|

G (320003@1)     B7 (x21202@1)          C (x32010@1)                DI (xx0232@1)had a moment when I thought I might be right,
    G (320003@1)    B7 (x21202@1)         C (x32010@1)         DBut (xx0232@1)Ashley how could it be?
G (320003@1)          B7 (x21202@1)                    C (x32010@1)             DI (xx0232@1)drank your sherry bourbon thinking you might come around,
      G (320003@1)                  B7 (x21202@1)        C (x32010@1)      DThere (xx0232@1)ain't no one on this rooftop but me.
B7 (x21202@1)                            CAnd (x32010@1)now I'm sitting here like a mixed up little kid,
B7 (x21202@1)                       CYou (x32010@1)said you wanted me but you never did.
G (320003@1)         B7 (x21202@1)      C (x32010@1)              DThere (xx0232@1)was a moment my love for you was strong,
    G (320003@1)         C (x32010@1)       GBut (320003@1)Ashley that moment is gone
G (320003@1)         C (x32010@1)       G (320003@1)     F#/G
Ashley that moment is gone.
Em (022000@1)     C (x32010@1)       GNow (320003@1)that moment is gone.

That should be pretty damn close.  I may have misplaced a chord name here
or there but follow the pattern of the rest if I messed up.  It is a pretty
simple, and awesome, song.  Enjoy.