Another person linked to The Alabama Folk Lyric "The Merry Girl" -- there's a few versions from the book that I'll post below.

This lighthearted love song is less usual than the unhappy type. It came straight from the songsters. I quote the entire song from one (Robert Jones Songster, NY 18--, p. 6) for comparison:

What a jolly girl am I.
And I'll tell you the reason why,
Because I'm engaged to something sweet;
And it seems as every day,
When he goes away,
To whisper something sweet at the door.

Chorus:
Goodbye darling, I must leave you:
One more kiss before I go.
I'll be back tomorrow night:
If I cannot I will write a line or two
To let my darling know

Ladies, if you want to find
Some gents that's good & kind;
You can be no happier I'm sure,
Ain't it nice to have a beau,
That when he comes to go
To whisper something sweet at the door?

And his teeth are white like pearl
And his darling little curl;
And his name is Lilly Dusky Moore.
He's the joy of my life,
And I soon will be his wife,
Then he need not whisper at the door.