This is 100% accurate. Straight from the sheet music.

G:     3 2 0 0 0 3          C9/G:  X X 2 0 1 X
Cm9/G: X X 1 0 1 X          C/G:   3 X 2 0 1 0
D/G:   3 X 4 2 3 X          Cm/G:  3 X 1 0 1 X
Am:    X 0 2 2 1 0          G/B:   X 2 0 0 3 X
C:     X 3 2 0 1 0          Em7:   0 2 0 0 3 0
G/D:   X X 0 0 0 3          D:     X X 0 2 3 2
C2:    X 3 5 5 3 X          C/D:   X X 0 0 1 0
D/F#:  2 X X 2 3 2          Em:    0 2 2 0 0 0
Bm:    X 2 4 4 3 2          Dsus:  X X 0 2 3 3
Am7:   X 0 2 0 1 0          Bm7:   X 2 4 2 3 2

INTRO: G  C9/G  Cm9/G  G  C/G

G (320003@1)                    D/G (300232@1)            C/GSure (3x555x@1)I think about you now and then
         Cm/G                     G (320003@1)   C/GBut (3x555x@1)it's been a long long time
G (320003@1)                      D/G (300232@1)          C/GI've (3x555x@1)got a good life now I've moved on
        Cm/G         D (xx0232@1)     Am (x02210@1)G/B (143121@7)CSo (x32010@1)when you cross my mind



I try not to think about
     GWhat (320003@1)might have been
       Em7            C'Cause (x32010@1)that was then
            G/D (4x3121@7)           Am (x02210@1) G/BAnd (143121@7)we have taken different roads
CWe (x32010@1)can't o back again
G/B (143121@7)                     AmThere's (x02210@1)no use giving in
            G/B (143121@7)      D (xx0232@1)   C2And (x32030@1)there's no way to know

What might have been

[INTRO]

G (320003@1)                              D/G (300232@1)            C/GWe (3x555x@1)could sit and talk about this all night long
           Cm/G           G (320003@1)       C/GAnd (3x555x@1)wonder why we didn't last
GYes (320003@1)they might be the best days
D/G (300232@1)                  C/GWe (3x555x@1)will ever know
                  Cm/G              D (xx0232@1)    Am (x02210@1)G/BBut (143121@7)we'll have to leave them in the past

CSo (x32010@1)try not to think about
GWhat (320003@1)might have been
       Em7              C'Cause (x32010@1)that was then
             G/D (4x3121@7)           Am (x02210@1)    G/BAnd (143121@7)we have taken different roads
CWe (x32010@1)can't go back again
G/B (143121@7)                        AmThere's (x02210@1)no use giving in
            G/B (143121@7)      D (xx0232@1)     C2And (x32030@1)there's no way to know

What might have been

[BRIDGE]

Em (022000@1)                       BmThat (x24432@1)same old look in your eyes
                  CIt's (x32010@1)a beautiful night
                   D (xx0232@1)     G (320003@1)D/F#I'm (200232@1)so tempted to stay
Em (022000@1)                       BmBut (x24432@1)too much time has gone by
                       CWe (x32010@1)should just say goodbye
                  Dsus4And (xx0233@1)turn and walk away

D  Am7  Bm7

CAnd (x32010@1)try not to think about
      GWhat (320003@1)might have been
        Em7          C'Cause (x32010@1)that was then
             G/D (4x3121@7)           Am (x02210@1)  G/BAnd (143121@7)we have taken different roads
CWe (x32010@1)can't go back again
G/B (143121@7)                      AmThere's (x02210@1)no use giving in
            G/B (143121@7)      D (xx0232@1)   C2And (x32030@1)there's no way to know
                      GWhat (320003@1)might have been

Am (x02210@1) G/B (143121@7)      D (xx0232@1)   CNo (x32010@1)we'll never know

What might have been

OUTRO: G  C9/G  Cm9/G  G