If You Were The Only Girl     in key of A 
Written by Nat D. Ayer with lyrics by Clifford Grey
Sung by George Robey and Violet Loraine in 1916. In 
the post WW2 era, this song was covered by many great 
singers, including Dean Martin, Perry Como and Bing 
Crosby.
For Dean Martin's version, use a capo on fret #1.
Intro:  A   B7   E7   A   E7
Verse 1:
           A            F#7  B7    
        If you were the only girl in the world
            E7              A    E7
        and I were the only boy
            F#m                          Bm
        Nothing else would matter in the world today
        E7                           A        E7
        We could go on loving in the same old way
Verse 2:
          A         F#7   B7
        A garden of Eden  just made for two
             E7                 A     E7
        With nothing to mar our joy
        F#m              C#m                 C#7
        I would say such wonderful things to you
        D           Adim    A         G         F#7
        There would be such wonderful things to do
           Bm           Dm   C#m         F#7
        If you were the only girl in the world
            B7         E7   A     E
        and I were the only boy.
Verse 3:
           A            F#7  B7    
        If you were the only girl in the world
            E7              A     E7
        and I were the only boy
        F#m                              Bm
        Nothing else would matter in the world today
        E7                           A        E7
        We could go on loving in the same old way
Verse 4:
          A         F#7   B7
        A garden of Eden just made for two
             E7                 A     E7
        With nothing to mar our joy
        F#m              C#m              
        I would say such wonderful things to you
          D         Adim     A         G         F#7
        There would be  such wonderful things to do
           Bm       Dm       C#m         F#7
        If you were the only girl in the world
            B7         E7   A . . . . .
        and I were the only boy.
Outro:  B7   E7    A   D   A
Note: Some versions omit Verse 3, and/or use an 
instrumental version for the first 2 lines of the 
last verse.
This TAB By Yarrowyck AKA Bruce Howlett