If you want to play a easier version you can click transpose -2 and put a capo on  
second fret and the chords are simple (A  Bm, D, Em and G) 

Intro: E B Dbm A 

    E                     B      Dbm                A 
You lied to me, and now I see, a liar is all you’ll ever be 
    E                B                  Dbm            A 
You let me down, you fooled around, and now you get to watch me now 

              E                   B 
I’m gonna get even, wait and see, you’re gonna be so sorry 
       F#m                               A  
When I get thought with you, you wish you’d never had been born 
              E                                  B 
I’m gonna get even, gonna mess you up, there’s a whole lot of boys  
                        F#m                            A 
Out there to love, you’ll never have another chance to break my heart no more 
              Dbm                 E 
I’m gonna get even, I’m gonna get even  

           E         B                       Dbm              A 
I’ll never kiss your lips again, cause now I know where they have been 
          E                    B                           Dbm        
Oooooh, I got big plans, for my revenge, but you won’t know how,  
         A 
You won’t know when 

              E                   B 
I’m gonna get even, wait and see, you’re gonna be so sorry 
       F#m                               A  
When I get thought with you, you wish you’d never had been born 
              E                   B       Dbm    A 
I’m gonna get even, I’m gonna get even 
              E                                  B 
I’m gonna get even, gonna mess you up, there’s a whole lot of boys  
                        F#m                            A 
Out there to love, you’ll never have another chance to break my heart no more 
              Dbm                 E 
I’m gonna get even, I’m gonna get even  
              B                   Dbm      A    E    B    Dbm    A 
I’m gonna get even, I’m gonna get even,  

    E                     B      Dbm                A 
You lied to me, and now I see, a liar is all you’ll ever be