Rumer Willis’ Ex-Boyfriend Derek Thomas Alleges Demi Moore 'Threatened to Destroy' Him Amid Custody Battle Over Daughter

Rumer Willis’ ex-boyfriend Derek Thomas filed court docs recently where he claimed her mother, Demi Moore, threatened him amid his ongoing custody battle over daughter, Louetta.

Thomas and the House Bunny star, 37, welcomed their daughter in 2023, with Willis previously accusing him of emotional abuse and domestic violence.

According to The Sun, Thomas told a judge that Willis told him “directly that she did not want her family present for the first 40 days after Louetta’s birth in 2023."

“Nonetheless, on the day after Louetta was born, Ms. Moore and household staff members came into the home and caused a significant disturbance," the docs continued.

“On this occasion, Ms. Moore, apparently based on something said by [Rumer], threatened to ‘Destroy me,’” he claimed.

He previously filed for child custody and visitation in July 2025.

The pair — who dated from 2020 until 2024 — have been locked in the bitter custody battle since last year. The Once Upon a Time in Hollywood actress then accused Thomas of being "insane" and inflicting "incessant domestic violence" in her own lawsuit she filed last month.

She also demanded primary physical custody of her little one, alleging her ex's abuse "often [happened] in front of the minor child or while they were trapped in the car with him.”

"He engaged in ongoing coercive control through prolonged circular verbal attacks that he is unable or unwilling to stop. [He] engages in this type of attack for over six hours at a time on what became a daily basis," Willis said in the court docs.

“I was constantly trying to keep the peace and walk on eggshells,” she added. “He wanted to isolate me from my friends and family. He constantly called me a liar with no reason behind it. He told me I was a bad girlfriend all the time."

She continued: "He had paranoid behavior saying that my mother and I were plotting to take Louetta away from him. He got very mad at me when I would not let his mother smoke weed in my house when Louetta was a newborn."

In the docs the indie singer filed earlier this week, he also claimed he never acted “aggressively or inappropriately” toward his ex.

Thomas alleged Willis used their daughter in sponsored “adult sexual humor” content without his consent. He further denied accusations that he was on drugs and didn’t pay child support.