There's another tab, but i think this one would sound a bit better :) 
G        
Once upon a time 
G 
A few late nights ago 
G 
You were in my sights 
G 
I got you alone 
Em            D 
I found you, oh I found you 


G 
You thought I didn't care 
G 
You said I'd never change 
D 
Made so many plans 
               
I had to rearrange 
Em            C                       D         
Around you, oh around and around and around you 

G 
Now I'm long gone 
D        Em    
It was hard to see 
                C 
Now I realized you're falling for me 


Em                 C                     D      
But you knew I was trouble when I walked in 
   G        D  
So shame on you 
G   Em              C                    D 
For making up these rumors that I never did 
           G      D 
And try to put me down oh 
Em             C                     D 
You knew I was trouble when I walked in 
   G        D    
So shame on you 
G   Em               C                    D 
For faking all those tears that you never shared 
             G             D         Em 
It's time to get up of the cold hard ground 

   C  D        G        D         Em 
Oh oh trouble, trouble, trouble 
   C  D        G        D  
Oh oh trouble, trouble, trouble 


G 
One apologize I've never seen you cry 
D 
And even if you did 
D 
No, I'm not the reason why 
Em 
You're drowning 
          D 
Oh you're drowning (drowning) 
G 
drowning (drowning) 

G 
I had to walk away 
G 
I guess this is how it goes 
G                 D 
Watch the curtain fall 
          G 
'Cause you putted on a show 
Em           C          D          G 
Without me, without me, without me oh 

  
             D 
Now I'm long gone 
               Em 
It was hard to see 
              C                 
Now I realize the joke is on me 


Em                 C                     D      
But you knew I was trouble when I walked in 
   G        D  
So shame on you 
G   Em              C                    D 
For making up these rumors that I never did 
           G      D 
And try to put me down oh 
Em             C                     D 
You knew I was trouble when I walked in 
   G        D    
So shame on you 
G   Em               C                    D 
For faking all those tears that you never shared 
             G             D         Em 
It's time to get up of the cold hard ground 

   C  D        G        D         Em 
Oh oh trouble, trouble, trouble 
   C  D        G        D  
Oh oh trouble, trouble, trouble 


C 
Trouble troublemaker 
            D 
Yeah that's your middle name 
            G                         Em 
Playing the victim I suspect that you created the game 
         C                             D 
That was only one direction and you've gone the wrong way 
        G 
You can say what you want 
              Em 
But don't you dare say I've changed 
    C                     D                   G 
And worst of all you take everything I said so personal 
        Em 
I never meant it that way 
          C              
With your heart on your sleeve 
         D 
And your mind on forever 
      G      Em 
Girl, we are never ever ever haha 


Em                 C                     D      
But you knew I was trouble when I walked in oh 
Em             C                     D 
You knew I was trouble when I walked in ooh 
Em             C                     D 
You knew I was trouble when I walked in 
   G         D    
So shame on you 
G   Em              C                    D 
For making up these rumors that I never did 
             G             D         Em 
It's time to get up of the cold hard ground 

   C  D        G        D         Em 
Oh oh trouble, trouble, trouble 
   C  D        G        D  
Oh oh trouble, trouble, trouble 

And you could end it on a G