"After filming, I just knew I had to go out there and make a human being," Ben Affleck and Neil Patrick Harris' "Gone Girl" co-star told Daily Mail adding that she told herself then, "I'd better make sure this is all buried away. I don't want to release any of this when I get home."
With her partner British businessman Robie Uniacke, 53, Pike already has a two-year-old son named Solo and is currently seven months pregnant with her second child.
During the premiere of the film adaptation of Gillian Flynn's novel in New York, Pike was with her partner and her son.
"If you have a little boy, you walk through the door at home and you get on to the floor with some Lego. That's a wonderful antidote," she shared.
For Pike, "Gone Girl" was "so tough and such a hard experience that the instant I'd finished I thought. I need to bring something positive into the world. Life is good with little people around."
She also added she is very different from her femme fatale role Amy Dunne in "Gone Girl," which she described as a "narcissistic woman."
"Gone Girl" dominated the box office not only in the United States but also in other countries. After hitting theaters in South Korea from Oct. 24-26, David Fincher's thriller ranked number at the country's weekend box office, The Hollywood Reporter has learned.
Despite its success, "Gone Girl" still would have been better as a television show, TV and film producer Chris Moore told New York Observer.
"There are a ton of decisions that get made in that movie," Moore said. "I would've liked a lot better if I got to see all that play out. To show that even in two and a half hours is hard."
"Gone Girl" also stars Tyler Perry, Carrie Coon, Kim Dickens, Patrck Fugit, David Clennon, Lisa Banes, Missi Pyle, Emily Ratajkowski, Casey Wilson, Lola Kirker and Boyd Holbrook.
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