This chord progression throughout the song!
Am  C  G  Fm


Intro:
Am  C  G  Fm  x2

Verse:
Am
Baby baby
C                  G                Fm
When we first met I never felt something so strong
Am		        C
You were like my lover and my best friend
G		        
All wrapped in one with a ribbon on it
Am			   C
And all of a sudden you went and left
G			Fm
I didn't know how to follow
	   Am
It's like a shock that spun me around
        C
And now my heart's dead
G			Fm
I feel so empty and hollow

	Am			 C
And I'll never give myself to another the way I gave it to you
G				Fm
You don't even recognize the ways you hurt me, do you?
Am		    C
It's gonna take a miracle to bring me back
G			Fm
And you're the one to blame
			Am
And now I feel like....oh!

Bridge:
	      C
You're the reason why I'm thinking
G				Fm
I don't wanna smoke on these cigarettes no more
Am 				C
I guess that's what I get for wishful thinking
G			   Fm		     Am
Should've never let you enter my door
	C			      G
Next time you wanna go on and leave
		Fm			  Am
I should just let you go on and do it
		   C		G	Fm
'Cause now I'm using like I bleed

Chorus:
			Am
It's like I checked into rehab
		     C		G	Fm
And baby, you're my disease
			Am
It's like I checked into rehab
		C		G	Fm
And baby, you're my disease
		    Am
I gotta check into rehab
		C		G	Fm
'Cause baby you're my disease
		       Am
I gotta check into rehab
		C		G	Fm
'Cause baby you're my disease

Verse:
Am            C                          D
Damn, ain't it crazy when you're loveswept
              Fm
You'd do anything for the one you love
Am                   C                         D
'Cause anytime that you needed me I'd be there
              Fm
It's like you were my favorite drug
Am             C                        
The only problem is that you was using me
D                    Fm
In a different way than I was using you
Am              C                        
But now that I know it's not meant to be
D                    Fm
I gotta go, I gotta wean myself off of you

	Am			 C
And I'll never give myself to another the way I gave it to you
G				Fm
You don't even recognize the ways you hurt me, do you?
Am		    C
It's gonna take a miracle to bring me back
G			Fm
And you're the one to blame
			Am
And now I feel like....oh!

Bridge:
	      C
You're the reason why I'm thinking
G				Fm
I don't wanna smoke on these cigarettes no more
Am 				C
I guess that's what I get for wishful thinking
G			   Fm		     Am
Should've never let you enter my door
	C			      G
Next time you wanna go on and leave
		Fm			  Am
I should just let you go on and do it
		   C		G	Fm
'Cause now I'm using like I bleed

Chorus:
			Am
It's like I checked into rehab
		     C		G	Fm
And baby, you're my disease
			Am
It's like I checked into rehab
		C		G	Fm
And baby, you're my disease
		    Am
I gotta check into rehab
		C		G	Fm
'Cause baby you're my disease
		       Am
I gotta check into rehab
		C		G	Fm
'Cause baby you're my disease

Bridge:
	      C
You're the reason why I'm thinking
G				Fm
I don't wanna smoke on these cigarettes no more
Am 				C
I guess that's what I get for wishful thinking
G			   Fm		     Am
Should've never let you enter my door
	C			      G
Next time you wanna go on and leave
		Fm			  Am
I should just let you go on and do it
		   C		G	Fm
'Cause now I'm using like I bleed

Chorus:
			Am
It's like I checked into rehab
		     C		G	Fm
And baby, you're my disease
			Am
It's like I checked into rehab
		C		G	Fm
And baby, you're my disease
		    Am
I gotta check into rehab
		C		G	Fm
'Cause baby you're my disease
		       Am
I gotta check into rehab
		C		G	Fm