very easy song. i tabbed this ages ago but no-one voted for it so here i go again. 
good cwk song. really like it here it goes.

i reccomend u play this in barre chords

with transition in chorus from A to F#m, hit the deep E string  and it sounds better

Intro/verse- A, F#m

chorus-A, F#m x3
      A, E, A, D, A, E, A

repeat verse
repeat chorus
repeat verse
repeat chorus

bridge-Bm, G x4

chorus until

last chorus chords change a bit, but theyre easdy to figuire out. and its really 
late and im tired.. so ya
repeat chorus