Here are the chords, written out in the key of G:
(Verse)
Gmaj7/Gmaj7/Gmaj7/Gmaj7/
Cmaj7/Cmaj7/Cmaj7/Cmaj7/
Cmja7/Cmaj7/Gmaj7/Cmaj7/
B7/Cmaj7/B7/B7/

Gmaj7/Gmaj7/Gmaj7/Gmaj7/
Cmaj7/Cmaj7/Cmaj7/Cmaj7/
Cmja7/Cmaj7/Gmaj7/Cmaj7/
B7/Cmaj7/D7/D7/C/D7
(Chorus)(use the funny fingerings:Am7 for C, and slide it up two frets for D)
G/C/D/C/G/C/D/D7/
C/D/C/D7/Gmaj7/C/D/C/
(Key Change)

The second verse and chorus are a full step higher than the first(in A)--just play barre chords--then there is a chorus a full step higher(in B) and another chorus a full step higher than that(C#)

Easiest to play it all as barre chords:
Gmaj7:
3-4-4-3-x-x
Cmaj7:
3-3-5-4-5-x
B7:
2-2-4-2-4-2
D7:
5-5-7-5-7-5

simply because it is so easy to slide up two frets for each key change and not worry about any other fingerings--

This song seems like the inspiration for The Eagle's "Lying Eyes" --it has that same Gmaj7 sound at the beginning and all through, and is a "she thinks about what might have been" song--