In "A Moveable Feast", Hemingway claimed that Zelda taunted Fitzgerald over the size of his penis. After examining it in a public restroom, Hemingway told Fitzgerald "You're perfectly fine," assuring him that it was larger than those of statues at the Louvre. One of the most serious rifts occurred when Zelda told him that their sex life had declined because he was "a fairy" and was likely having a homosexual affair with Hemingway. There is no evidence that either was homosexual, but Fitzgerald nonetheless decided to have sex with a prostitute to prove his heterosexuality. Zelda found condoms that he had purchased before any encounter occurred, and a bitter fight ensued, resulting in lingering jealousy. She later threw herself down a flight of marble stairs at a party because Fitzgerald, engrossed in talking to Isadora Duncan, was ignoring her. In September 1924, Zelda overdosed on sleeping pills. The couple never spoke of the incident and refused to discuss whether it was a suicide attempt. The episode propelled Fitzgerald to write in his notebook, "That September 1924, I knew something had happened that could never be repaired." This breakdown of their relationship worsened Fitzgerald's alcoholism.