Grammy-winning music producer Jack Antonoff's marriage to Margaret Qualley is reportedly facing challenges, leading to a separation after nearly three years. Page Six confirmed the split on July 8, 2026, citing difficulties in their relationship. Sources told Page Six that Antonoff could be "very particular about how he liked things," and that Qualley "didn’t always feel like her perspective was being heard or given the same weight." Communication was described as a "challenge between him and Margaret."
Antonoff had several notable relationships prior to his marriage to Qualley.
Early Relationships
Antonoff dated Scarlett Johansson for two years while they attended Manhattan’s Professional Children’s School. A former classmate told The Post that Antonoff was "absolutely obsessed with her," but they broke up shortly after graduation, with Johansson becoming "swept up in the Hollywood scene."
Lena Dunham and Lorde
From 2012 to 2017, Antonoff was in a relationship with writer and actress Lena Dunham. They were set up on a blind date by comedian Mike Birbiglia and Antonoff's sister, Rachel. Dunham detailed in her 2026 memoir, "Famesick," that their relationship began to deteriorate after she underwent a hysterectomy in 2017 and later admitted to cheating on Antonoff with an old flame. Their breakup was confirmed in January 2018, described as amicable.
Shortly after his split from Dunham, rumors circulated about a relationship between Antonoff and singer Lorde, with whom he produced and co-wrote her 2017 album "Melodrama." Dunham alluded to their "closeness" in her memoir, referring to Antonoff being "ensconced with a teen pop star I was too oblivious to be jealous of." Despite the speculation and frequent joint appearances, both Antonoff and Lorde maintained they were only close friends. Antonoff tweeted in January 2018 that such relationships were "deeply important and sacred" but denied being romantically involved. Lorde echoed this sentiment on Instagram Live the following month.
Carlotta Kohl and Margaret Qualley
In 2018, Antonoff was linked to model Carlotta Kohl. The two were seen courtside at a New York Knicks game and made a notable red-carpet appearance at the 2021 Grammy Awards. The timeline of their separation remains unclear.
Antonoff and Margaret Qualley were first romantically linked in August 2021, with their relationship becoming public in March 2022 at the AFI Awards Luncheon. Qualley confirmed their engagement in May 2022, flashing a diamond ring at the Cannes Film Festival. They married on August 19, 2023, in Long Beach Island, New Jersey, with a ceremony attended by several celebrities.
By July 2026, however, signs pointed to a separation. Antonoff attended Taylor Swift's wedding on July 3 without Qualley, and the couple had not been publicly seen together since February. Fans also noted that the song "Margaret," by Lana Del Rey x Bleachers, was absent from the band's tour setlist. Despite the reported separation, Antonoff was seen wearing his wedding ring as of July 8, 2026.