Gm chord                 C Chord               Bm chord
e-----------3------  e-------------------   e-1-----------------
B---1--------------  B----1--------------   B----------------3--
G-------2----------  G-------------------   G----------------3--
D------------------  D-----------2-------   D----------------3--  
A------------------  A---------------3---   A-------------------    
E------------------- E-------------------   E-------------------


Play a few times with a chorus pedal, the other guitar part is just hittin a sinle string of each chord, u can figure it out.