first guitar, then the bass comes in with:
G|----------------|
D|----------------|
A|----------------|
E|-2--------------|

after HEY GIRL! 2X INTRO
G|------------------------------|
D|------------------------------|
A|------4-4--6-6--2-2-2-2-2-2-2-|
E|-2-2--------------------------|

after the 2nd time
G|------------------------------|
D|------------------------------|
A|------1-1--2-2--2-2-2-2-2-2-2-|
E|-2-2--------------------------|

VERSE 2X
G|-----------------------------------------------------------------|
D|-----------------------------------------------------------------|
A|---------------------------------4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-|
E|-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2---------------------------------|

G|------------------------------|
D|------------------------------|
A|-6-6--4-4--2-2--2-2-2-2-2-2-2-|
E|------------------------------|

CHORUS
G|-----------------------------------------------------------------|
D|-----------------------------------------------------------------|
A|---------------------------------4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-|
E|-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2---------------------------------|

G|-----------------------------------------------------------------|
D|-----------------------------------------------------------------|
A|-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-|
E|-----------------------------------------------------------------|

G|-----------------------------------------------------------------|
D|-----------------------------------------------------------------|
A|---------------------------------4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-|
E|-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2---------------------------------|

G|-----------------------------------------------------------------|
D|-----------------------------------------------------------------|
A|-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1-1-1-1-1-1-1-1-----------------|
E|-------------------------------------------------4-4-4-4-4-4-4-4-|

G|-----------------|
D|-----------------|
A|-----------------|
E|-2---------------|

PRE-CHORUS 2X
G|------------------------------|
D|------------------------------|
A|------4-4--6-6--2-2-2-2-2-2-2-|
E|-2-2--------------------------|

listen to the song...