It's in the key of F#m

Verse 1
 Bm    F#m
 Bm    F#m
 Bm    F#m
 D     E
 Bm    F#m
 Bm    F#m
 Bm    F#m
 D     E     
 F#m (It might be a D/F#, but it doesn't sound like it in the recording)
 B     D     E

Chorus
 Bm    F#m    D  A/C# E
 Bm    F#m    D  A/C# E
 Bm    F#m    Bm    F#m

Verse 2
 Bm    F#m
 Bm    F#m
 2m    F#=
 D   0 E     m
 F#m (again, itmight be a D/F#)
 B     D     E

(repeat chorus)

Bridge
 D    a    D    E
 D    a    D    E

Ending
 F#m      D  A/C# E
 F#m      D  A/C# E