The Juice

Meet Lena Dunham’s boyfriend, Jack Antonoff

Dunham and Antonoff at the Golden Globes. (Getty Images)

Lena Dunham didn't just have her girls with her to celebrate her two Golden Globe wins this weekend. The "Girls" creator and star, who won the awards for best actress and best comedy series, also had boyfriend Jack Antonoff in tow.

Yep, the 26-year-old wunderkind is dating the singer for the band Steel Train and guitarist for Fun.

"I know there's some rule that you're not supposed to talk about your boyfriend publicly just because it seems like all starlets under the age of 33 have decided not to do that, but if you're in love with someone great, then I don't understand why you wouldn't tell everybody," Dunham told Interview in its February issue. "You don't have to post naked pictures of them on the Internet or tweet pictures of your Christmas celebration, but I feel like, in a way, he's my best advertisement, so I'm like, 'Why would I not tell people who ask?'"

See also: Why did Lena Dunham thank Chad Lowe in her Golden Globes speech?

Lena and Jack with his sister in September. (Getty Images)

Us Weekly reported in September that the duo had been together for some time, and that same month Dunham was photographed with Antonoff at the musician's sister Rachel's fashion show in New York.

In a new interview with Pride Source, Antonoff said, "There's nothing awkward or clunky about our relationship. I think what probably happens when you put two awkward/clunky people together is that their awkward/clunky world seems like a normal world. And I think that's something that's nice about our relationship."

The 28-year-old rocker, who reportedly dated "Arrested Development" star Alia Shawkat from 2007 to 2010, sat next to Dunham at the Globes and then joined her at HBO's Official Golden Globe Awards After Party held at Circa 55 Restaurant.

See also: Lena Dunham apologizes for Paul Bernardo/Karla Homolka joke

The duo sparked rumours of an engagement after Dunham's best actress acceptance speech in which she thanked "my family, Laurie, Grace, Kipp, and now Jack." The rumour appeared to be confirmed by the massive diamond on her ring finger, but she set the record straight backstage at the ceremony.

Lena Dunham/Instagram

"I am not engaged," Dunham assured reporters, according to the Daily Mail. "I don't want to get married until all gay people can get married."

But it's clear the duo doesn't need a piece of paper to have fun. Yesterday Dunham posted a photo on Instagram of her hotel room the morning after the ceremony, with her two Golden Globes on a desk and clothes strewn about, along with the caption "Walk of Shame."