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07/20/2016 12:48 EDT | Updated 06/18/2018 10:03 EDT

Mila Kunis Opens Up About Why She Never Married Macaulay Culkin

They dated 15 years ago (seriously, we can't believe it either), but in a recent interview, actress Mila Kunis finally tells us why she never tied the knot with actor Macaulay Culkin.

The "That '70s Show" actress first dated the "Home Alone" star in 2002 when Kunis was 18 and Culkin was 21, but Kunis said she found it difficult dating a child star, she revealed on "The Howard Stern Show" on Tuesday.

"He was huge because you couldn't walk down the street with him," the 32-year-old star told the host. "Fans were just screaming... they didn't know how to react. It wasn't a normal response to a celebrity, fans responded in a very abnormal way."

But Stern also asked Kunis about marriage and if at any point in their relationship, it had come up. He also asked the "Bad Moms" actress if she was ever in love with him.

"Honestly, who knows?," she replied. "Since I was 16 I told my dad, 'Just so you know, I don't believe in marriage,'" she told the 62-year-old host. "At one point I was like, 'I'll get married when gay people are allowed to marry.' I was like, 'This is not for me.'"

US Weekly notes Kunis and Culkin kept their romance pretty private for the most part, and broke up after eight years of dating in 2011. In 2012, she reunited with fellow "That '70s Show" actor Ashton Kutcher and the two got married in a secret ceremony in 2015, with Kutcher calling it a "ninja effort" of a wedding.

"We really didn't want helicopters at our wedding and it's a legitimate concern. So I was like posting things on social media that we were in different locations to avoid [people and noise], we didn't want to be screaming our vows at each other," he said on "The Ellen DeGeneres Show. "

The two have a one-year-old daughter Wyatt and are currently expecting their second child.

CORRECTION: A previous version of this story stated Kunis and Culkin were both 18 when they started dating. The error has been fixed.

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