After hearing criticism about the fifteen-year age gap between the two main characters, writer and director Gene Stupnitsky pointed out there was a fifteen-year age difference between the characters played by Jennifer Lawrence and Bradley Cooper in Silver Linings (2012), but no one had an issue with that.
Jennifer Lawrence described her experience working alongside Andrew Barth Feldman as akin to working with Christian Bale due to their improvisational abilities.
While his character will attend Princeton, Andrew Barth Feldman delayed going to Harvard to star in this film.
Andrew Barth Feldman explained to Variety that his comedic chemistry with Jennifer Lawrence was immediate. "On Day One, we told each other our deepest, darkest secrets, and it only got deeper from there."