Jack Antonoff has had several high-profile relationships before his three-year marriage to Margaret Qualley, which Page Six confirmed ended on July 8, 2026. A source cited "challenges" in the relationship, noting that Antonoff "could be very particular about how he liked things" and that communication was a challenge. The article reviews his dating history, including a two-year relationship with Scarlett Johansson during high school, where a former classmate said Antonoff was "absolutely obsessed" with her. Antonoff dated Lena Dunham from 2012 to 2017 after being set up on a blind date. In Dunham's 2026 memoir "Famesick," she detailed how their relationship crumbled after she got a hysterectomy in 2017 and confessed to cheating on Antonoff with an old flame. After their split, rumors swirled that Antonoff was dating Lorde, whom he produced and co-wrote "Melodrama" with. Dunham's memoir also touched on their "closeness," though both maintained they were just close friends. The exes risked an awkward run-in at Taylor Swift and Travis Kelce's wedding.