However, she also admitted that the split "wasn’t easy at first, but we managed to move the heart of our relationship, the heart of what created our family, into something new that gave the girls a loving, supportive environment with both parents."
What's more, she claimed that they "felt more connected than we did before the divorce."
According to The New York Times, the Ghost actress wrote that Bruce believed her acting career took her away from their family and allegedly told her he wasn't sure if he wanted to be married.
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Since the split, the A-list exes have remained on good terms.
Demi attended the Die Hard actor's vow renewal ceremony to Emma Heming Willis in March.
In addition to that, Demi cracked several lighthearted jokes about Bruce at the Comedy Central Roast of Bruce Willis.
"For those of you that don’t know me, I am Demi Moore," she said on the program.
"I was married to Bruce for the first three Die Hard movies, which makes sense because the last two sucked."