Mila Kunis never wanted to marry until Ashton Kutcher, will be a full-time mom

LOS ANGELES, July 7 (UPI) -- Mila Kunis says Ashton Kutcher was her first real kiss.

The 30-year-old actress recently opened up to W magazine about her relationship with her fiancé and former That '70s Show co-star. Kunis and Kutcher were just friends when the sitcom's script called for them to kiss, but the series set the stage for their real life romance.

"My first real kiss ever was with him on the show," the actress admits. "And when That '70s Show had a prom, my date for the prom turned out to be my fiancé. We can honestly say that we went to prom together!"

"Not only did [the show] introduce me to my fiancé, but I'm so grateful that all my mistakes are recorded for posterity," she continues. "I went through puberty on television ... through everything embarrassing that a girl can go through in front of my fiancé. There's no question that he's seen the worst. I find that comforting."

Kunis and Kutcher started dating in April 2012, nearly six years after That '70s Show came to an end. The couple got engaged in February, and announced Kunis' pregnancy in May. The pair keep their relationship extremely private, but the actress does reveal that her love for Kutcher changed her mind on marriage.

"I never wanted to get married," she says. "From the age of 12, I prepared my parents for no marriage. 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."

Kunis recently wrapped Jupiter Ascending with Channing Tatum, and will take a year off to care for her baby. She asserts she "never wanted to be the person who only has business on her mind," and admits she doesn't "eat and breathe acting."

"I'm excited about being a full-time mom," she relates. "Although, give me a year of not working and I'll see how I feel."

Jupiter Ascending is scheduled for a February 6, 2015 release.