Here are the words sung by Marion Harris, May, 1923, transcribed from a sound file at The Red Hot Jazz Archive:

WHO'S SORRY NOW?

VERSE: You smiled when we parted. It hurt me somehow.
I thought there was nothing worthwhile.
The tables are turning and you're crying now,
While I am just learning to smile.

CHORUS: Who's sorry now?
Who's sorry now?
Whose heart is aching for breaking each vow?
Who's sad and blue?
Who's crying too,
Just like I cried over you?
Right to the end,
Just like a friend,
I tried to warn you somehow.
You had your way.
Now you must pay.
I'm glad that you're sorry now.

SPOKEN: You will never know the pain you brought to me
When I realized that it was not to be.
For each hour of gladness that I spent with you,
There were days of sadness when you proved untrue.
Every single word you told me, I believed.
You knew love was blind and that's why you deceived.
How you took advantage of my faith and trust
All my tender hopes you trampled in the dust.
Now that it's all over, I'm so glad that we're through.
I'm the one who's happy. You're the one who's blue.
You will count the hours spent in vain regret
While your heart is breaking, trying to forget.
Now you know it doesn't pay to play with fate.
You have learned your lesson just a bit too late.

SUNG: I'm glad that you're sorry now.