Report: 'Girls' Star Lena Dunham Dating Fun. Guitarist Jack Antonoff

The pair is said to already be collaborating on projects

Lena Dunham and Jack Antonoff of fun. Credit: Dimitrios Kambouris/Getty Images; D Dipasupil/FilmMagic

Girls mastermind Lena Dunham and fun. guitarist Jack Antonoff are dating, reports US Weekly. A friend of Dunham's says the pair are "trying to keep it a secret," though the two have already begun collaborating for projects, including a video for The New Yorker. Dunham has also "asked to use fun. songs on Girls," and also wore a dress designed by Antonoff's sister, Rachel, on The Colbert Report in May.

The second season of Girls is scheduled to premiere next January on HBO.