Intro:
C    D# G D# x2

On the verse, you just play the note instead of the chord as above.

Verse 1:
Didn't expect any of this
But it's really nice
Didnt want you to cause a fuss
But it feels alright

After the F on the first two lines of the pre-chorus, just put your hand on the strings 
they can't make any noise and hit them.

Pre-Chorus:
   D#        E    F
So Thank you very much
    D#     E       F
Its really nice to know
     D#    E         C
That you enjoyed the show
      D#          G
And I want you to know when to go

Chorus:
         A#
Cos this should be a thrill
       C
But it feels like a drill
        D                      D#
Now you must let me go, let me go

Verse 2: (On the first two times, you play each chord twice. On the last two you play 
chords continuosly)
C                C
  I just imagine that I'm you
D#                            C#
  And there's nothing nothing nothing I can't do x4

Verse 3: (Same notes as verse 1)
I remember what it was like
And it was really nice
Never thought I would experience this
From the other side