This is my 1st tab. 
You can just play power chords.

Intro: F# Ab C# Bb (4x)

Verse 1:
                  F#                Ab
Now you said that all would be just fine 
                F#                Ab
And I know that changes come with time
          F#              Ab                 F#       Ab
Still sometimes I don't want the times to change

Pre-Chorus
           F#                   Ab 
And I know tomorrow you'll be gone
           Bb                  Ab
So I know tomorrow will move on
       F#         Ab           Bb       Ab  
But maybe part of us will stay the same


Chorus:
       C#
Don't fall asleep
         F#
We don't want to miss a moment
         Bb                 Ab                F#
'Cause tonight might be the best night of our lives
      C#
Don't close your eyes
         F#   
We could stay right here forever
         Bb                 Ab                F#       Ab
'Cause tonight might be the best night of our lives

F# Ab C# Bb


Verse 2:
                  F#                    Ab
I know sometimes I fight to keep things right
                 F#                  Ab
Fighting ends up such a waste of time
    F#                  Ab              F#      Ab   
The time will spend the time we have right now

Pre-Chorus:
                 F#               Ab 
Feeling like we don't know what's to come
              Bbm                 Ab
We'll be thinking where we first begun
       F#        Ab             Bb        Ab
And trying to re-live it all somehow

Chorus

Interlude: 

C# C  Ab Bb

C# C  Ab F#

Bridge: (sorry I couldn't figure out this part)
                           
We think we're headed somewhere
                             
Don't say goodbye tonight
                                
But we're not going nowhere
                
So don't say goodbye
       
Goodbye

Chorus

Outro: (Plays like Chorus)

Tonight might be the best night

Tonight might be the best night

Tonight might be the best night of our lives

F# Ab C# Bb  (4x)