My first tab! I got most of these chords from watching their video so I'm pretty 
sure they're all correct. You should really check out Alex and Sierra! Amazing 
chemistry on stage! Absolutely adore them! :D

I'm not sure what chords these are but it looks like this.

Am*
e|-----------|
B|-----1-----|
G|-----2-----|
D|-----2-----|
A|-----------|
E|-----3-----|

Asus2?*
e|-----------|
B|-----3-----|
G|-----------|
D|-----------|
A|-----2-----|
E|-----------|

Intro: Am Am* Asus2* F E x2

Am
Once upon time
A few mistakes ago

Am*
I was in your sights
You had me alone

Asus2*
You found me
You found me

F                  E
You found me

Am
I guess you didn't care
And I guess I liked that

Am*
And when I fell hard
You took a step back

Asus2*                            F     E
Without me, without me, without me

Am                     Am*
     And he's long gone
                            Asus2*
When he's next to me
               F                              E (1 strum)
And I realized the blame is on me

1 2 3 4

Am                                Am*                                Asus2
Cause I knew you were trouble when you walked in
F               E         Am
Shame on me no-ow
                  Am*                  Asus2
Flew me to places I'd never been
F                       E           
Till you put me down 
      Am                    Am*                                 Asus2*
Oh I knew you were trouble when you walked in
F               E         Am
Shame on me no-ow
                  Am*                  Asus2
Flew me to places I'd never been
F                                E                 Am (1 strum)
Now I'm lying on the cold hard ground

     Am*(1s) Asus2* (1s)
Ohhhhhhhhh
F (1s)      Em (1s)   Am (1s)
Trouble trouble
Am* (1s) Asus2(1s)
Ohhhhhhhh
F(1s)      E(1s)
Trouble trouble

Am
No apologies
        Am*
He'll never see you cry
Pretend he doesn't know
That he's the reason why
           Asus2*                                           F        E
You're drowning, you're drowning, you're drowning


Am
Heard you moved on
Am*
From whispers on the street
A new notch in your belt
Is all I'll ever be
Asus2*                             F     E
And now I see, now I see, now I see
Am                 Am*
And he's long gone
                      Asus2*
When he met me
               F                                E
And I realized the blame is on me


1 2 3 4

Am                                Am*                                Asus2
Cause I knew you were trouble when you walked in
F               E         Am
Shame on me no-ow
                  Am*                  Asus2
Flew me to places I'd never been
F                       E           
Till you put me down 
      Am                    Am*                                 Asus2*
Oh I knew you were trouble when you walked in
F               E         Am
Shame on me no-ow
                  Am*                  Asus2
Flew me to places I'd never been
F                                E                 Am (1 strum)
Now I'm lying on the cold hard ground

     Am*(1s) Asus2* (1s)
Ohhhhhhhhh
F (1s)      Em (1s)   Am (1s)
Trouble trouble
 Am*(1s) Asus2* (1s)
Ohhhhhhhhh
F (1s)      Em (1s)   Am (1s)
Trouble trouble
 Am*(1s) Asus2* (1s)
Ohhhhhhhhh
F (1s)      Em (1s)   Am (1s)
Trouble trouble
 Am*(1s) Asus2* (1s)
Ohhhhhhhhh
F (1s)      Em (1s)   Am (1s)
Trouble trouble



If there's any corrections you have, please let me know and i'll fix them! If you 
watch their video on youtube, you'll probably get the strumming pattern easily. 
Happy learning! x