I hope this is right. Not too sure about the G in some places, but its mostly okay :) Peace out.

Tuning: Standard

INTRO: D Bm G A x2

VERSE:
D       Bm
One Two Three Four
G                A
Tell me that you love me more
D          Bm 
Sleepless, long nights
G                A
That was what my youth was for

D          Bm
Oh teenage hopes are lying at your door
G             A
Left you with nothing But they want some more

CHORUS:
A  Bm
Oh-Oh
       G
You're changing your heart
A  Bm
Oh-Oh
     G
You know who you are

VERSE: (same as previous)
Sweetheart, bitter heart
Now I can't tell you apart
Cozy and cold
Put the horse before the cart

Those teenage hopes
Who have tears in their eyes
Too scared to own up
To one little lie

Oh, oh, oh
You're changing your heart
Oh, oh, oh
You know who you are

One, two, three, four, five, six, nine, and ten
Money can't buy you back the love that you had then
One, two, three, four, five, six, nine, and ten
Money can't buy you back the love that you had then

Oh, oh, oh
You're changing your heart
Oh, oh, oh
You know who you are
Oh, oh, oh
You're changing your heart
Oh, oh, oh
You know who you are