I found these chords on another tab, but for guitar rather than piano. So, I put 
the guitar chords at the bottom for those who don't know them and these chords 
works perfect with guitar and piano.
F#                          B quick transition to C#
Give me one reason to stay here
                          F#
And I'll turn right back around.

(Repeat for all verses/chorus)

C#
Said I don't wanna leave you lonely, 
B                               F#
You've got to make me change my mind.

(Repeat for the bridges)


This chord progression repeats for the entirety of the song. 

Chords:
F#  E-2-------------|
    A-2---4---------|
    D-2---4---------|
    G-2-------------|
    B-2-------------|
    E-2-------------|

C# E-4-------------|
   A-4-------------|
   D-4----6--------|
   G-4----6--------|
   B-4-------------|
   E-4-------------|

B E-2--------------|
  A-2----4---------|
  D-2----4---------|
  G-2----4---------|
  B-2--------------|
  E-2--------------|