The G doesn't have to be played as Chord, the bass note is enough, the C is played 
with a G on the high e.

Intro: C G Am G

CHey, (x32010@1)boy you never had much game
                 G (320003@1)AmThought (x02210@1)I needed to upgrade
                                GSo (320003@1)I went and walked away way way
CNow, (x32010@1)I see you've been hanging out
                 G (320003@1)    AmWith (x02210@1)that other girl in town
                                      GLooking (320003@1)like a pair of clowns clowns clowns

BRIDGE:
CRemember (x32010@1)all the things that you and I did first?
                               GAnd (320003@1)now you're doing them with her
AmRemember (x02210@1)all the things that you and I did first?
                              GYou (320003@1)got me, got me like this
CAnd (x32010@1)now you're taking her to every restaurant
                        GAnd (320003@1)everywhere we went, come on!
AmAnd (x02210@1)now you're taking her to every restaurant
                              GYou (320003@1)got me, got me like this

CHORUS:
CBoy (x32010@1)you can say anything you want 
                                    GI (320003@1)don't give a shh, no one else can have ya
AmI (x02210@1)want you back I want you back
                            GWa-want (320003@1)you, want you back
CI (x32010@1)broke it off thinking you'd be cryin'
                                    GNow (320003@1)I feel like shh looking at you flyin'
Am (x02210@1)                            
I want you back I want you back
                            GWa-want (320003@1)you, want you back

C (x32010@1)Please, this ain't even jealousy
                  G (320003@1)    AmShe (x02210@1)ain't got a thing on me
                                           GTryin' (320003@1)to rock them ugly jeans jeans jeans
CYou (x32010@1)clearly didn't think this through
                   G (320003@1)     AmIf (x02210@1)what I've been told is true 
                                         GYou'll (320003@1)be crawling back like boo hoo hoo

BRIDGE:
CRemember (x32010@1)all the things that you and I did first?
                               GAnd (320003@1)now you're doing them with her
AmRemember (x02210@1)all the things that you and I did first?
                              GYou (320003@1)got me, got me like this
CAnd (x32010@1)now you're taking her to every restaurant
                        GAnd (320003@1)everywhere we went, come on!
AmAnd (x02210@1)now you're taking her to every restaurant
                              GYou (320003@1)got me, got me like this

CHORUS:
CBoy (x32010@1)you can say anything you want 
                                    GI (320003@1)don't give a shh, no one else can have ya
AmI (x02210@1)want you back I want you back
                            GWa-want (320003@1)you, want you back
CI (x32010@1)broke it off thinking you'd be cryin'
                                    GNow (320003@1)I feel like shh looking at you flyin'
Am (x02210@1)                            
I want you back I want you back
                            GWa-want (320003@1)you, want you back

C (x32010@1)                    G (320003@1)     AmOhhh, (x02210@1)I thought you'd still be mine 
                                      GWhen (320003@1)I kissed you goodbye uh oh uh oh
C (x32010@1)                 G (320003@1)      AmOhhh, (x02210@1)and you might be with her 
                                      GBut (320003@1)I still had you first uh oh uh oh

BRIDGE:
CRemember (x32010@1)all the things that you and I did first?
                               GAnd (320003@1)now you're doing them with her
AmRemember (x02210@1)all the things that you and I did first?
                              GYou (320003@1)got me, got me like this

CHORUS:
CBoy (x32010@1)you can say anything you want 
                                    GI (320003@1)don't give a shh, no one else can have ya
AmI (x02210@1)want you back I want you back
                            GWa-want (320003@1)you, want you back
CI (x32010@1)broke it off thinking you'd be cryin'
                                    GNow (320003@1)I feel like shh looking at you flyin'
Am (x02210@1)                            
I want you back I want you back
                            GWa-want (320003@1)you, want you back

C (x32010@1)   G (320003@1)AmOhhh, (x02210@1)I want you back
I want you back            G (320003@1)Wa-want you, want you back

C (x32010@1)   G (320003@1)AmOhhh, (x02210@1)I want you back
I want you back  
                          GWa-want (320003@1)you, want you back