In the September issue of Harper's Bazaar, Demi talks about her relationship with Ashton Kutcher. They met two years ago and since that time are together.
The 42-year-old actress called Kutcher, 27, her "soul mate" and said, "I truly feel I have been given that gift."
While she and Kutcher would like to "expand our family" — there have been tabloid reports that Moore was pregnant — there are no plans for marriage. "I feel that we are and that we don't need something formal, so to do so isn't a big deal one way or another," she tells the magazine.
Moore says the couple, who recently moved into their new home in the Hollywood Hills, enjoy "sharing a bath with one another and watching `Court TV.' Snuggling up naked."
As for the focus on the couple's 15-year age difference, Moore said, "It's been a challenging few years."
Moore has three daughters, Rumer, 17; Scout, 14; and Tallulah, 11, from her marriage to second husband Bruce Willis, Xinhua reports.
The actress has just finished shooting Half Light, a thriller set in Scotland; an ad campaign for Versace and is also setting up a holistic beauty company with two friends. Meanwhile, Kutcher continues to perfect his Jeremy Beadle skills.