Dermot Mulroney Divorce Requesting Equal Terms After 15 Years Together: Initially Bonded Over Music

Dermot Mulroney has filed for divorce from his wife of 15 years, Prima Apollinaare.

According to court documents obtained by People, the 61-year-old “Chicago Fire” actor submitted a petition on June 21 to dissolve their marriage, citing irreconcilable differences. The documents list their date of separation as “TBD.”

Divorce Terms Include Custody, Spousal Support, and Asset Division

The documents suggest an amicable approach, as Mulroney—who appears to be representing himself—has requested joint legal and physical custody of their two daughters—Mabel Ray, 17, and Sally June, 15. He also proposed that legal fees be split evenly between both parties.

While the couple hasn’t finalized how their assets will be divided, Mulroney indicated that “all community earnings and accumulation during marriage through the date of separation” should be considered community property.

A Relationship Built on Music and Film

Mulroney met Apollinaare in 2008, shortly after his divorce from actress Catherine Keener. They began dating that same year and embarked on a whirlwind romance, welcoming their two daughters before officially marrying in December 2010.

The couple reportedly connected through their mutual love for music. Mulroney is a trained cellist and has contributed to film scores for projects including Planet of the Apes and entries in the Mission: Impossible franchise. The “My Best Friend’s Wedding” actor is also a passionate musician, frequently taking the stage with his band, jackrabbit.

Apollinaare, originally born Tharita Cutulle, is a singer-songwriter from Italy. In a 2023 interview with music label Lost in the Manor, she said, “[I] got into music since I was born. My mom is a singer. My dad played trumpet and piano.”

Although the former couple share a mutual love and appreciation of the arts, Apollinaare wasn’t always fond of her husband’s film choices. In a conversation with the New York Post, Mulroney playfully shared that she wasn’t a fan of his horror films.

“I don’t think she’ll probably even see this movie because I know what her tolerance is,” he said of “Scream IV”. “She can’t even look at half of the posters.”

Despite Apollinaare’s low threshold for horror films, she was often seen by her husband’s side at industry events, showing her support for a career that has spanned decades.

While this divorce filing marks another high-profile celebrity split in 2025, it appears that both parties are planning to approach the process with mutual respect and a focus on family.