John Lennon 1963 demo version:

Verse 1:
F#                  Ebm   Bbm            B   C#
   At night I can't sleep    thinking of you
             
                 Ebm 
And every little thing that you do 

       B                  C#          F#    C#     
So I'm telling all my fri-ends I'm in love


Verse 2:
                     Ebm  Bbm                  B      C# 
And I'm telling them then     You make me feel proud

                  Ebm            
You make me wanna shout out loud

       B                  C#          F#   C#7
So I'm telling all my fri-ends I'm in Love Ohh

Chorus:
    B
I'm feeling on top of the world
       A#
I'm in love with a wonderful girl
     Ebm
I've never felt this way before
B                       C#
If this is love give me more more more more 

Verse 3:
      F#                        Ebm
And I think I'm just total with you