Mila Kunis on How She Fell for Ashton Kutcher

Mila Kunis and Ashton Kutcher have been married for a year and are expecting their second child, but, according to Kunis, they were never supposed to end up together.

The "Bad Moms" star, 32, known for guarding her privacy, opened up to Howard Stern about how her and Kutcher's friendship turned romantic.

"I think it took him and I both by surprise," she told Stern on his SiriusXM show. "We started dating with the idea that we both were never going to get married."

The leap to even dating was big enough. Although Kunis had known Kutcher since she was 15 when she was cast alongside him on "That '70s Show," there were never any sparks between them.

That is until 2012 when she ran into Kutcher at an awards show soon after his divorce from Demi Moore.

"I see this guy and I see his back and he's very tall," Kunis told Stern, adding that she looked ridiculous in a "big poofy dress."

The guy turned around and it was Kutcher.

"It was literally like if we were in a movie, the music would start playing," Kunis recalled. "I think he, for the first time ever, literally took my breath away."