From youtube

Intro
C - Am - F/A - G

Verse
C - Am - F/A - G
C - Am - F/A - G
C - Am - F/A - G

Pre-chorus
Am - G

Chorus
Am - F/A - C - G 
Am - F/A - C - G 
Am - F/A - C - G 
Am

Verse
C - Am - F/A - G

Pre-chorus
Am - G

Chorus
Am - F/A - C - G 
Am - F/A - C - G 
Am - F/A - C - G 
Am - F/A - C - G 

Bridge (2:00)
F/A - C - Am - G
F/A - C - Am - G
F/A - C - Am - G
F/A - C - Am - G

F/A - C - G
Am - F/A - C - G 

(quietly)
Am - F/A - C - G 
Am - F/A - C - G 
(big!)
Am - F/A - C - G 
Am - F/A - C - G 
Am
C - Am - F/A - G