This is the way Alejandro plays it (Hannah plays the same chords not using a capo):
Capo 5

Intro: G D Em D

G (320003@1)                      DHey, (xx0232@1)i was done playing games
                  Emknew (022000@1)i needed to upgrade
                     DSo (xx0232@1)I went and walked away way way
G (320003@1)                             DNow, (xx0232@1)you see i've been hanging out
                  EmWith (022000@1)another boy in town
G (320003@1)                 Em (022000@1)                DAt (xx0232@1)least he doesnt bring me down, down, down

BRIDGE:
GRemember (320003@1)all the things that you and I did first?
DAnd (xx0232@1)now you're doing them with her
EmRemember (022000@1)all the things that you and I did first?
D (xx0232@1)                      
You got me, got me like this
GAnd (320003@1)now you're taking her to every restaurant
DAnd (xx0232@1)everywhere we went, come on!
EmAnd (022000@1)now you're taking her to every restaurant
D (xx0232@1)                      GYou (320003@1)got me, got me like this

CHORUS:
GBoy (320003@1)you can say anything you want 
DIt (xx0232@1)dont mean a thing, no one else can have ya
EmI (022000@1)want you back
DYah (xx0232@1)i want you back
GI (320003@1)broke it off thinking you'd be fine
DNow (xx0232@1)I feel sick looking at you cryin'
Em (022000@1)                            
I want us back
Dyeah (xx0232@1)i want us back

G (320003@1)                     DPlease, (xx0232@1)rid me of this jealousy
                          EmYou (022000@1)know you belong with me
                       G (320003@1)       DAnd (xx0232@1)i'm gonna make you see, see, see
G (320003@1)                            DYou (xx0232@1)clearly didn't think this through
                         EmCause (022000@1)i had everything for you 
                           G (320003@1)  DAnd (xx0232@1)now i dont know what to do

GRemember (320003@1)all the things that you and I did first?
DAnd (xx0232@1)now you're doing them with her
EmRemember (022000@1)all the things that you and I did first?
D (xx0232@1)                      
You got me, got me like this
GAnd (320003@1)now you're taking her to every restaurant
DAnd (xx0232@1)everywhere we went, come on!
EmAnd (022000@1)now you're taking her to every restaurant
D (xx0232@1)                      GYou (320003@1)got me, got me like this

CHORUS:
GBoy (320003@1)you can say anything you want 
DIt (xx0232@1)dont mean a thing, no one else can have ya
EmI (022000@1)want you back
DYah (xx0232@1)i want you back
GI (320003@1)broke it off thinking you'd be fine
DNow (xx0232@1)I feel sick looking at you cryin'
Em (022000@1)                            
I want us back
Dyeah (xx0232@1)i want us back
G (320003@1)                             DOhhh, (xx0232@1)I thought that you'd be fine 
                    Em (022000@1)       D (xx0232@1)    
When I kissed you goodbye uh oh uh oh
G (320003@1)                           D (xx0232@1)     
Ohhh, and you might be with her 
                 Em (022000@1)       DBut (xx0232@1)I know we can work uh oh uh oh

CHORUS:
GBoy (320003@1)you can say anything you want 
DIt (xx0232@1)dont mean a thing, no one else can have ya
EmI (022000@1)want you back
DYah (xx0232@1)i want you back
GI (320003@1)broke it off thinking you'd be fine
DNow (xx0232@1)I feel sick looking at you cryin'
Em (022000@1)                            
I want us back
Dyeah (xx0232@1)i want us back
G (320003@1)                             DOhhh, (xx0232@1)I thought that you'd be fine 
                    Em (022000@1)       D (xx0232@1)    
When I kissed you goodbye uh oh uh oh
G (320003@1)                           D (xx0232@1)     
Ohhh, and you might be with her 
                  Em (022000@1)      D (xx0232@1)        GBut (320003@1)I know we can work uh oh uh oh