Dim 1 is the diminished chord on the 1st fret etc. 
 
 
A                                          Dim1  A    D    F#7  B7 
Let me call you sweetheart, I'm     in    love with you. 
E7                                            Ab  A    Dim2  E7 
Let me hear you whisper that you love me     too. 
A                                      Dim2  A      D     F#7  B                
Keep the lovelight glowing in      your  eyes so   blue. 
D           Dim3     A               D       B7   E7   A             
Let me call you sweetheart. I'm in love with you. 
 
 
 
                 Only Girl In The World. 
 
    A                 F#7  B7                           E7                   A      
If you were the only girl in the world, and I was the only boy. 
                                Dim1           Bm7     E7  
Nothing else would matter in the world today. 
                                               A            
We would go on loving in the same old way. 
                   F#7   B7    
A garden of Eden just made for two 
         E7                         A 
With nothing to mar our joy. 
 
F#m                     C#m        
I would say such wonderful things to you. 
D                       Dim1 A                          F#7    
There would be such wonderful things to do. 
   Bm7            Dim1 C#m       F#7           B7          E7   A        
If you were the only  girl in the world, and I was the only boy.