Hey! this is really simple to play! i used these chords from ear. im not sure about the 
bridge but the rest sounds fine :)
the strumming is for the verse all down strokes:
Cadd9 G         Em    D
1,2,3 1,2,3,4,5 1,2,3 1,2,3,4,5

For the chorus all strums down:
Cadd9           G               Em              D
1,2,3,4,5,6,7,8 1,2,3,4,5,6,7,8 1,2,3,4,5,6,7,8 1,2,3,4,5,6,7,8

for the bridge all strums down:
Am              Em               Last D
1,2,3,4,5,6,7,8 1,2,3,4,5,6,7,8  16x

Cadd9     G     Em             D
             I really thought you were the one
Cadd9     G         Em          D
             It was over before it begun
Cadd9     G           Em          D
            It?s so hard for me to walk away
Cadd9   G    D
But I know I can?t stay

Cadd9     G         Em             D
             You?re beautiful and crazy too
Cadd9     G         Em                 D
              Baby, that?s why I fell into you
Cadd9     G         Em              D
              Even though you would pretend to be
Cadd9    G      D
You were never with me

        Cadd9             G                 Em          D
So it?s over, yeah we?re through, so I?mma unfriend you
           Cadd9        G              Em          D
You?re the best I ever knew, so I will unfriend you
          Am                      G
?Cause I should have known, right from the start
       Em              D
I?m deleting you right from my heart
          Cadd9        G           Em          D
Now it?s over, my last move is to unfriend you

Cadd9     G         Em                  D
                 I thought in time that you could change
Cadd9     G         Em                  D
                    Time and love would heal the pain
Cadd9     G         Em              D
                 I didn?t want this day to come
Cadd9   G         D
Now all I feel is numb

        Cadd9             G                 Em          D
So it?s over, yeah we?re through, so I?mma unfriend you
           Cadd9        G              Em          D
You?re the best I ever knew, so I will unfriend you
          Am                      G
?Cause I should have known, right from the start
       Em              D
I?m deleting you right from my heart
          Cadd9        G           Em          D
Now it?s over, my last move is to unfriend you

Am          Em
        You come on to anybody
Am      Em
        Everybody all the time
Am        G                  D
      You give up to anybody
D                        "Cadd9   G    Em   
D  (x2)"
What I thought was only mine

       Cadd9             G                 Em          D
So it?s over, yeah we?re through, so I?mma unfriend you
           Cadd9        G              Em          D
You?re the best I ever knew, so I will unfriend you
          Am                      G
?Cause I should have known, right from the start
         Em            D
That you didn't have a human heart
          Cadd9        G           Em          D
Now it?s over, my last move is to unfriend you

"Cadd9  G   Em  D  (x2)"

Cadd9          G                 Em       D
                       So I?mma unfriend you
Cadd9          G                 Em       D
                       So I?mma unfriend you