First time I've figured out chords to a song, hope they're right!
Sorry about the lyrics if they're wrong, I got them by listening to the leaked 
version. Thanks everyone, enjoy!

Standard Tuning
Capo on 2nd fret

*notes:
In the VERSES you can play 'F' with the high E string open (kinda a Fmaj7)
In the CHORUS you can play the 'G' with the high E string open
It sounds right either way so play it how you think it should be!

Play Fmaj7 like this: 

E: --1-- THUMB
A: --3-- FOURT
D: --3-- FIFTH
G: --2-- THIRD
B: --1-- SECON
E: --0-- OPEN

H FINGER
 FINGER
 FINGER
D FINGER

Play G/C like 
E: --3-- 
A: --2-- 
D: --0-- 
G: --0--  
B: --0-- 
E: --0-- 

this:

enjoy!

INTRO
    
    

VERSE 1
            
Hey girl I’m w

          
aiting on ya
             
I’m waiting on

 
 ya
             
Come on and le

              
t me sneak you

 
 out
            
And have a cel

        
ebration
              
 celebration
             
The music up t

           
he windows dow

n

PRE CHORUS
    (
Yeah
           
We’ll be doing

         
 what we do
            
Just pretendin

        
g that we cool

, 
       
and we know it

 too

    (
Yeah
           
We’ll be doing

           
 what we do
            
Just pretendin

          
g that we cool

, 
    
So tonight

CHORUS
             
Let’s go crazy

              
 crazy crazy t

      
il we see the 

sun
            
I know we only

              
 met but let’s

 
 pretend it’s 

love
             
And never neve

              
r never stop f

   
or anyone
            
Tonight let’s 

         
get some and l

              
ive while we’r

  
e young

  
(Woah)
              
And live while

               
 we’re young
            
Tonight let’s 

             
get some and l

              
ive while we’r

  
e young

    

VERSE 2
            
Hey girl it’s 

          
now or never
             
It’s now or ne


ver
             
Don’t over thi

              
nk just let it

 
 go
            
And if we get 

             
together, yeah

       
 get together
              
don’t let the 

             
pictures leave

      
 your phone

PRE CHORUS
    (
Yeah
           
We’ll be doing

           
 what we do
            
Just pretendin

          
g that we cool

, 
    
So tonight

CHORUS
             
Let’s go crazy

              
 crazy crazy t

      
il we see the 

sun
            
I know we only

              
 met but let’s

 
 pretend it’s 

love
             
And never neve

              
r never stop f

   
or anyone
            
Tonight let’s 

         
get some and l

              
ive while we’r

  
e young

  
(Woah)
              
And live while

               
 we’re young
            
Tonight let’s 

             
get some and l

              
ive while we’r

  
e young

    

BRIDGE
            
And girl you a

            
nd I we’re ‘bo

              
ut to make som

          
e memories ton

ight
             
I wanna live w

           
hile we’re you

ng

We wanna live 

while we’re yo

ung

CHORUS
             
Let’s go crazy

              
 crazy crazy t

      
il we see the 

sun
            
I know we only

              
 met but let’s

 
 pretend it’s 

love
             
And never neve

              
r never stop f

   
or anyone
            
Tonight let’s 

         
get some and l

              
ive while we’r

  
e young

             
Let’s go crazy

              
 crazy crazy t

      
il we see the 

sun
            
I know we only

              
 met but let’s

 
 pretend it’s 

love
             
And never neve

              
r never stop f

   
or anyone
            
Tonight let’s 

         
get some and l

              
ive while we’r

  
e young

    

  

            
Tonight let’s 

         
get some and l

              
ive while we’r

  
e young