"Moonlight" by Guy de Maupassant is the story of a married woman confessing infidelity to her older sister. The story is set in the younger woman's home.
Madame Julie Roubere tells her older sister, Madame Henriette Letore, of her recent travels with her husband. She describes her husband's lack of passion when she was moved by the beauty of nature and how he refused to kiss her. She later sat crying on the bank of the lake in the moonlight when a man asked what was wrong. They chatted and found they had a lot in common before becoming lovers. The older sister says that it is often not the man we love, but love itself, and that her true lover had been the moonlight.