This is an amazing song and I was sad it wasn't up here yet! I'm not sure if she 
plays it with a capo or not but these chords are for if you're not using a capo. 
Hope this is alright ^-^ 

G
The written word was just enough, 
                            Em                       D
To keep us going when the world would get a little tough.
     G
And, I held you up when winter came, 
                                  Em      D
And no one said a thing when everything became so very
Em               G           Em           D
Complicated complicated complicated they said.

G 
The spring held nothing but surprise, 
                             Em           D
And all that we ignored was open to our eyes.
             G
And I said, then maybe we should settle down, 
                      Em        D
Find a cottage or a tunnel underground

And we'll be
    Em           G         Em              D 
Complicated complicated complicated they said we would be,
  Em           G         Em              D  
Complicated complicated complicated they said.
      Em               G
Ohhhhhhhohhhhhh, I should've known, 
      Em                D
Ohhhhhhhohhhhhh, we'll have to go, 
Em                  G 
Back to the that we were
               Em 
Before we were us, 
             D 
Before I was me, 
                 Em           G 
Before we were, happier than I've ever been, 
       Em                        D
Than you'll ever see, 
                                 Em G 
'Cause that's the way it has to be, 
                  Em D 
The way it has to be.

G 
We felt the summer on our skin, 
                                Em            D 
We curled up in the warmth and let each other in.
             G 
And I asked, "Have you felt this way before..."
                               Em           D 
You turned to me said "No I'll be forever yours..."

And we'll be... 
  Em           G         Em              D 
Complicated complicated complicated they said we would be, 
  Em           G         Em              D 
Complicated complicated complicated they said.
Em                    G 
Ohhhhhhhohhhhhh, I should've known, 
               Em              D
And I said ohhhhhhhohh, we'll have to go, 
Em                  G
Back to the that we were
               Em 
Before we were us, 
             D 
Before I was me, 
                 Em           G 
Before we were, happier than I've ever been, 
Em                    D 
Than you'll ever see, 

'Cause that's the way it has to... 

Em                               G 
I would push and you would pull away from me my heart would bleed
    Em                              D                 
And I'd say things I didn't mean to try and get you back to me.
       Em 
We've bent the rules, played the games
     G 
And never said we felt the same.
  Em                     
We ended things like we began.
    D 
And feared what we became... 

            Em                    G 
So we'll go back, to the that we were, 
               Em 
Before we were us, 
             D 
Before I was me, 
                  Em          G
Before we were, happier than I've ever been, 
      Em               D
Than you'll ever see, 

'Cause that's the way it has to... 
  Em                    G 
Back to the way that we were, 
               Em 
Before we were us, 
             D 
Before I was me, 
                 Em           G 
Before we were happier than I've ever been, 
      Em              D 
Than you'll ever see, 
                                 Em    G 
'Cause that's the way it has to be.
                        Em    D 
That's the way it has to be.
                  G 
The way it has to be.