Lena Dunham Admits To Cheating On Jack Antonoff During Their Relationship

Lena Dunham is lifting the lid on the end of her relationship with Grammy-winning music producer Jack Antonoff.

The two were an item for around five years, before going their separate ways in 2017.

In her new memoir Famesick, the Girls creator has written candidly about how things ended for herself and Jack, revealing that she slept with an old boyfriend while they were going through a rough patch.

Lena claimed that after undergoing her hysterectomy – which she had due to severe endometriosis – she tried to talk to Jack about her increasing reliance on pain medication, after which they got into the “worst” fight of their relationship.

She wrote that Jack then “angrily flush[ed] all my pills down the toilet, which necessitated a call to the doctor and a late-night trip to the pharmacy to get more so that I wouldn’t go into withdrawal – from any one of the drugs – overnight”.

The former Fun. musician apparently then addressed Lena in ways she said she had “never been spoken to” before, which she said opened up old needs for her “to be wanted”.

At this point, Lena texted an ex she’d known since school, telling him: “I’ve been through something awful. I don’t want to talk about it, but I need you to fuck me and I need you to do all of the work.”

When Jack went on tour, Lena recalled embarking on a two-week affair with her ex, before eventually ending her relationship.

In her book, Lena also spoke about Jack’s closeness with a fellow musician, who she does not name, but heavily suggests is Lorde, with whom he collaborated on her hit 2017 album Melodrama.

The Emmy nominee wrote that as things in her relationship with Jack began to falter, he was spending an increasing amount of time with a “teen pop star”, once coming home from a doctor’s appointment to find her “sprawled across our sectional couch, weeping into Jack’s lap as he told her that ‘your teens are for experimenting’”.

She noted that his “comforting” tone of voice “almost brought tears to my eyes”, as it had been “so long since he’d spoken to me with that kind of expansive generosity”.

“I had never stopped flirting – I mean, I wasn’t dead yet,” she said. “But I had observed careful boundaries, never taking it far enough that I could be declared out of bounds.”

Lena continued: “If I’d wanted to look, perhaps I may have seen that Jack was not observing them as closely as I was. I wasn’t paying attention, but the internet sure was, and they made some pretty amazing PowerPoints on the issue, so convincing they had me rethinking events that I myself had been present for.”

HuffPost UK has contacted Jack Antonoff’s team for comment.

Jack and Lorde were previously the subject of an expansive viral PowerPoint presentation, speculating about the nature of their relationship.

At the time, Jack dismissed the rumours as “dumb heteronormative gossip”, while Lena later told The Cut after her break-up that she found the speculation “awful”.

“I don’t think anything happened between them,” Lena insisted in 2018. “I can never know someone else’s life. I have never spoken to [Lorde] about it. We haven’t talked since Jack and I broke up.”

She added: “It was awful, and I couldn’t do anything about it except trust that what he was saying to me was true.”

Lorde also made it clear around this time that she and Jack were not an item, insisting: “I love him. He’s awesome, but we’re not dating!”

Elsewhere in her book, Lena also made some surprising revelations about her working relationship with Adam Driver, and his apparently “aggressive” outbursts on the set of Girls.