The lines that Sue Ann quotes to Lou ("Thy breath was shed upon my breast. All night upon my heart I felt a warm heart beat.") are a close paraphrase of lines in Ernest Dowson's 1894 poem "Non sum qualis eram bonae sub regno Cynarae" - "thy breath was shed / Upon my soul...All night upon mine heart I felt her warm heart beat". This poem also includes the line "I have forgot much, Cynara! gone with the wind".
One of the episodes of The Mary Tyler Moore Show that MeTV aired in memory of Betty White following her passing on December 31, 2021.
The title is a line from the song "Secret Love" recorded by Doris Day, from the movie Calamity Jane (1953).