Tiny Furniture writer/director/star Lena Dunham has signed on to write the script and direct the adaptation of David Levithan and Rachel Cohn's new novel Dash and Lily's Book of Dares (they also wrote Nick and Norah's Infinite Playlist) for Scott Rudin Productions, reports Deadline.

Dash and Lily's Book of Dares centers on two teens who are left alone in Manhattan for Christmas, and develop a connection when Lily leaves a notebook full of literary clues at the Strand bookstore and Dash follows the clues and leaves some of his own. There are dares in the book that lead the characters to crowded places like Macys and FAO Schwartz. Along the way, they reveal information about themselves, leading to an inevitable meeting.

No production date has been set.