Lena Dunham opens up about CHEATING on Jack Antonoff in new memoir

Writer and filmmaker Lena Dunham has revealed shocking details about the end of her relationship with musician Jack Antonoff in her tell-all memoir 'Famesick'.

In the book, Dunham reflects on the breakdown of their five-year relationship, admitting to having an affair with a former school flame named Nick. Detailing her week-long fling with 'Nick', she shared that the brief relationship took place while she was still with Antonoff and ultimately led to the end of their years-long romance.

Dunham, in her book, also recalled her growing concerns about Antonoff’s “closeness” with an unnamed “teen pop star” he was working with at the time, which she said had begun “striking an odd note.”

Detailing her many sexual experiences, she also shared details about how she finally pulled the plug on her long relationship. Recalling the moments after Jack's return home from his tour, she said, describing their final moments together, writing, “I tried to calm my sheer terror by telling myself I was finally home from a bad dream.”

Touching upon their split, she wrote that the two of them, "put our foreheads together and wept" before breaking up. “No matter what happens,” she wrote of telling Antonoff, “you will always be my first great love.”

The pair reportedly attended a therapy session shortly after their split to discuss their next steps, before finally pulling the plug on the relationship.

Following the breakup, Dunham continued her relationship with Nick, and the two briefly became engaged while dealing with personal struggles, including substance abuse. She later sought treatment and ended the relationship for good.

Dunham went on to marry musician Luis Felber in 2021.

Jack went on to marry actress Margaret Qualley in 2023.Get the latest entertainment updates from the Times of India, along with the latest Hindi movies, upcoming Hindi movies in 2026 , and Telugu movies.”