AceShowbiz - Tallulah Willis wasn't taking her mother's marriage to Ashton Kutcher well. The youngest daughter of Demi Moore and her ex-husband Bruce Willis has revealed in a new interview that the actress' marriage to the "That '70s Show" alum, who is 15 years her junior, was "really hard" on her.

In a Monday, June 5 episode of FOX's "Stars on Mars", Tallulah said she "didn't fully understand" her family's fame until Demi's relationship with the now-45-year-old actor gained public's attention. "It was, like, 2003, [and] my mom had just started dating Ashton," she recalled.

"It was that moment, a lot going on, and I really went inside of myself," the 29-year-old designer went on opening up. "That did send me into, like, a total dumpster fire. It was really hard, and I’m still unpacking."

The Wyllis founder was just nine years old when her mother Demi started dating Ashton. The "Ghost" star and the "Dude, Where's My Car?" star married in September 2005, before they separated in November 2011. Their divorce was finalized in 2013.

In an interview with Esquire, Ashton revealed his struggles to raise stepchildren during his marriage to Demi. "I was twenty-six, bearing the responsibility of an eight-year-old, a ten-year-old, and a twelve-year-old. That's how some teen parents must experience their twenties. It was a lot. Losing a kid that you think you're going to have, and that close to thinking you're going to have a kid, is really, really painful. Everyone deals with that in different ways," he said in the interview published in January, before gushing over Demi's daughters, "They were awesome then, and they're awesome now."

Demi shares three children, Rummer Willis, 34, Scout Willis, 31, and Tallulah, with her second husband Bruce. As for Ashton, he went on to date his former "That '70s Show" co-star Mila Kunis in 2012. They became engaged in February 2014 and got married in July 2015. The couple has two children together, a daughter born in October 2014 and a son born in November 2016.