The "Jupiter Ascending" star covers the August issue of W magazine, where she opens up about how her life changed when she started dating her "That '70s Show" costar Ashton Kutcher.
"I never wanted to get married. From the age of 12, I prepared my parents for no marriage," the expecting star tells W.
"Then things changed -- I found the love of my life. Now my theory on weddings is: Don't invite anyone. Do it privately and secretly. My parents are okay with that. They're just excited that I said yes."
Mila and Ashton are expecting their first child together and plan to tie the knot very soon. This will be the second marriage for Kutcher, who finalized his divorce from Demi Moore in 2013, and the first trip down the aisle for Kunis.
The brunette beauty just couldn't stop gushing about her fiance, either. "We all get movie star crushes," she reveals in the mag. "I'm marrying mine."
The cute couple first met back in 1998, and while they didn't hit it off right away, she's happy to have shared a ton of "firsts" with the "Jobs" star.
"My first real kiss ever was with him on the show," the "Black Swan" star explains. "And when 'That '70s Show' had a prom, my date for the prom turned out to be my fiance. We can honestly say that we went to prom together."
Mila and Ashton have basically grown up in front of the world together, and she's very thankful to have shared those experiences with Kutcher.
"Not only did it introduce me to my fiance, but I'm so grateful that all my mistakes are recorded for posterity," she says. "I went through everything embarrassing that a girl can go through in front of my fiance. There's no question that he's seen the worst. I find that comforting."
We're sure these two will make great parents -- what do you think about Kunis' candid comments? Tell toofab below and click "Launch Gallery" above to see even more expecting stars!