So, I saw a version of this on here and it didn't seem right to me so I decided to try
figure it out a little and here's what I've come up with.

CAPO on the 3rd Fret

Verse:
 G (320003@1)         DSo (xx0232@1)what if...
 Em (022000@1)             CAnd (x32010@1)told you all...

Chorus:

C (x32010@1)      GJust (320003@1)coz I can't go on,
D (xx0232@1)      EmJust (022000@1)coz I die when you're gone,

...

That's basically it, just repeat that throughout the song and you should be fine - its 
100% but its something. Enjoy :D