Funny, Matt R, that's exactly what I was thinking. Billie Holliday came to mind. I was also thinking of the music hall song my grandfather used to sing to me:

Fare thee well for I must leave thee, do not let this parting grieve thee and remember that the best of friends must part. Adieu, adieu kind friends adieu. I can no longer stay with you. I'll hang my harp on a weeping willow tree, and may the world go well with thee.

And as for Dottie Parker:

By the time you swear you're his, shivering and sighing, And he vows his passion is infinite, undying Lady, make a note of this: One of you is lying.