The 34-year-old actor is very close to his older sister Maggie Gyllenhaal's daughters Ramona, eight, and three-year-old Gloria, and admits he loved playing a father on screen as it is something he is yearning for in real life, reported People magazine.
"I would love for it not to be fictional. I have two nieces whom I adore and whom I'm connected to in so many powerful ways. They are deeply ingrained in the movie and my love for them is there," Jake said.
"There was a sense of two people who said, 'What is our truth?' It was painful for a lot of people in our family but that honesty was inspiring.