I've seen some versions of this song out there and they seem a bit more complicated than
need be. I think this is a nice way to play through the chords of this song for
intermediate players (like me) who want to keep it simple and work towards adding more
difficult chords as they improve (i.e. in other versions Cm/G is listed. Cadd9 sounds
just as nice
and is easier to get to at times. Also D/G in other posts you can play as a D and I
think it still sounds good. Bm is probably the hardest chord in this song but it's the
correct chord and sounds good). Just my thoughts as this is my first attempt at posting 
a tab and I wanted to start with this. I'm in no way claiming this is 100% correct by 
any means
it's just a nice version of the song that's easier to play in my opinion. The finger
picking intro I figured out from looking at a combination of other tabs. It may not be
exact but it's pretty darn close and sounds good to me. Hope you enjoy!

Intro:
E-|---------------|---------------|-----------------|-----------------|
B-|-3-------3-----|-3-------3-----|-------3---1-----|-------3---1---0-|
G-|-----0-------0-|-----0-------0-|---0-----------0-|---0-------------|
D-|---0-------0---|---0-------0---|-2---2---2---2---|-1---1---1---1---|
A-|---------------|---------------|-----------------|-----------------|
E-|-3-----3-------|-3-----3-------|-----------------|-----------------|

E-|---------------------|
B-|-0-------0-------1-0-|
G-|-----0---------0-----|
D-|---0-------0h2-------|
A-|---------------------|
E-|-3-----3---------3-3-|

G (320003@1)                    DSure (xx0232@1)I think about you now and then
  Cadd9 (x32030@1)                 GBut (320003@1)it's been a long long time
G (320003@1)                      DI've (xx0232@1)got a good life now I've moved on
  Cadd9 (x32030@1)            D (xx0232@1)     Am (x02210@1)G/BSo (143121@7)when you cross my mind
CI (x32010@1)try not to think about
     G (320003@1)             G/BWhat (143121@7)might have been
     Em (022000@1)            C'Cause (x32010@1)that was then
            D (xx0232@1)             Am (x02210@1) G/BAnd (143121@7)we have taken different roads
CWe (x32010@1)can't go back again
G (320003@1)                      AmThere's (x02210@1)no use giving in
      G/B (143121@7)           D (xx0232@1)    Cadd9And (x32030@1)there's no way to know

What might have been

[INTRO REPEAT]

G (320003@1)                              DWe (xx0232@1)could sit and talk about this all night long
    Cadd9 (x32030@1)               GAnd (320003@1)wonder why we didn't last
G (320003@1)                             DYes (xx0232@1)they might be the best days we will ever know
   Cadd9 (x32030@1)                          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
G (320003@1)                  G/BWhat (143121@7)might have been
      Em (022000@1)          C'Cause (x32010@1)that was then
            D (xx0232@1)             Am (x02210@1)    G/BAnd (143121@7)we have taken different roads
CWe (x32010@1)can't go back again
G (320003@1)                     AmThere's (x02210@1)no use giving in
            G/B (143121@7)     D (xx0232@1)  Cadd9And (x32030@1)there's no way to know
                GWhat (320003@1)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)  GI'm (320003@1)so tempted to stay
Em (022000@1)                       BmBut (x24432@1)too much time has gone by
                       CWe (x32010@1)should just say goodbye
                  DsusAnd (xx0233@1)turn and walk away

D (xx0232@1)    Am7 (x02010@1)    Bm7 (x20202@1)CAnd (x32010@1)try not to think about
      G (320003@1)            G/BWhat (143121@7)might have been
        Em (022000@1)         C'Cause (x32010@1)that was then
            D (xx0232@1)             Am (x02210@1)  G/BAnd (143121@7)we have taken different roads
CWe (x32010@1)can't go back again
G (320003@1)                      AmThere's (x02210@1)no use giving in
            G/B (143121@7)     D (xx0232@1)     Cadd9And (x32030@1)there's no way to know
                GWhat (320003@1)might have been
Am (x02210@1) G/B (143121@7)      D (xx0232@1) Cadd9No (x32030@1)we'll never know

What might have been