Lena Dunham’s newly released memoir, Famesick, reveals shocking details about her five-year relationship with musician Jack Antonoff, including her admission of infidelity. The memoir, which hit shelves on April 14, 2026, recounts Dunham’s three-day affair with her middle school ex-boyfriend, Nick, just before her breakup with Antonoff in early 2018.
Dunham describes feeling like a “ghost” whenever she saw Antonoff with younger pop stars, a sentiment that reflects her emotional turmoil during their relationship. She recalls a pivotal moment in 2017 when she underwent a hysterectomy, which she claims altered her connection with Antonoff.
In her memoir, Dunham quotes Antonoff’s dismissive response to her jealousy, stating, “You’re just mad because she doesn’t want to be your friend.” This encapsulates the strain that their relationship endured as Dunham grappled with feelings of inadequacy.
Despite the affair, Dunham expressed that it ultimately benefited her relationship with Antonoff, suggesting a complex dynamic between the two. “No matter what happens, you will always be my first great love,” she wrote, to which Antonoff replied, “And you’ll be mine.”
Antonoff, who married actress Margaret Qualley in 2023, had previously co-written and co-produced Lorde’s Grammy-nominated album, Melodrama, released in 2017. His rising career in the music industry often placed him in the spotlight, which Dunham admits contributed to her feelings of jealousy.
As Dunham navigates her past in Famesick, she reflects on the intense and physical nature of her affair with Nick, describing it as a significant chapter in her life. The memoir serves not only as a personal account but also as a commentary on the complexities of love and fidelity.
With the release of Famesick, observers are left to ponder the implications of Dunham’s revelations on her past relationships and how they may affect her future endeavors. Details remain unconfirmed regarding any further responses from Antonoff or his current wife, Qualley.
