Lena Dunham Admits Cheating on Jack Antonoff

Lena Dunham has disclosed infidelity during her past five-year relationship with music producer Jack Antonoff. In her recently released memoir, 'Famesick,' Dunham details how she cheated on Antonoff. The affair took place in late 2017, following Dunham's hysterectomy surgery and a subsequent pause in their relationship. During this period, she reconnected with a former boyfriend, Nick, and they engaged in a two-week sexual relationship.

Dunham's memoir also touches upon rumors of Antonoff's infidelity with singer Lorde. While both Antonoff and Lorde have consistently denied any romantic involvement, speculation persisted for years, fueled by fan theories and a viral PowerPoint presentation. Antonoff publicly addressed the rumors, emphasizing the importance of his friendships and work relationships, while Lorde described their connection as a "platonic marriage."

Ultimately, Dunham and Antonoff's relationship ended. Antonoff later married actress Margaret Qualley in 2023, and Dunham wed musician Luis Felber in 2021. The memoir also sheds light on Dunham's past flirtations and observations about Antonoff's interactions with others, including a 'teen pop star' who was reportedly seen weeping in his lap.