I saw a lot of people trying to figure out this song on the net, so I decided to write 
down. How to take the chords will be shown at the end.
 Excuse all the --- things, they are there for you to see when to switch chord
Here goes:

Verse:

A5         D5             C#5         F#5
You who attacked my old heart with a glance
      F5             C?7     F5    E5
And replaced it with something new

A5        D5          C#5     F#5
You ran away as the pendulum swung
      F5      E5
I had only begun


Chorus:

A5    A5  Ab5   C#5
I'll be     O-----kay
F#5  F#5 major7  F#5  B5
I'll be          O-----K


Bridge:
A5 , D5 , Eb?7, D5
A5 , D5 , Eb?7, D5

Verse 2:

A5         D5            C#5          F#5
You who replaced every beat that was false
      F5           C?7   F5
And uptight like a metro---nome

A5               D5                  C#5       F#5
You should have stayed 'cause that winter was long
       F5            E5
But by dawn you were gone

Chorus:

A5    A5  Ab5   C#5
I'll be     O-----kay
F#5  F#5 major7  F#5  B5
I'll be          O-----K

Bridge:
A5 , D5 , Eb?7, D5
A5 , D5 , Eb?7, D5


Verse 3:
A5         D5             C#5    F#5
You who resigned when I finally decide-d
     F5     E5
That I was alive

Chorus:

A5    A5  Ab5   C#5
I'll be     O-----kay
F#5  F#5 major7  F#5  B5
I'll be          O-----K

A5    A5  Ab5   C#5
I'll be     O-----kay
F#5  F#5 major7  F#5  B5
I'll be          O-----K


Ending (same as bridge):
Bridge:
A5 , D5 , Eb?7, D5
A5 , D5 , Eb?7, D5
A5


Chords used in tabs:
Barr? A5            Barr? D5

-5---              -5--- | 
-5---              -7--- | 
-3---              -7--- | 
-7---              -7--- | 
-7---              -5--- | 
-5---              -5--- | 


C#5

-4---
-5---
-4---
-6---
-4---
-4---


F#5

-2---
-2---
-3---
-2---
-4---
-2---

F5


-1---
-1---
-2---
-1---
-3---
-1---


Cdim7

-x---
-4---
-3---
-4---
-3---
-x---                  x=not to be played


E5

-0---
-0---
-1---
-2---
-2---
-0---


Normal A (non barr?)

-0---
-2---
-2---
-2---
-0---
-----

A5

-0---
-3---
-2---
-2---
-0---
-----

Ab5 (I take a kind of barr? on second freat)

-----
-4---
-2---
-2---
-----
-----


F#5

-2---
-2---
-2---
-4---
-4---
-2---

F#5 major7

-2---
-2---
-2---
-3---
-4---
-2---

F#5

-2---
-2---
-2---
-2---
-4---
-2---


B5

-2---
-4---
-4---
-4---
-2---
-----

Ebdim7

-x---
-7---
-6---
-7---
-6---
-x---


There you go!