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Dermot Mulroney files for divorce from Prima Apollinaare after nearly 15 years

Ryan Brennan | June 24, 2025

Dermot Mulroney is ready to start a new chapter of his life. 

According to TMZ, the 61-year-old “My Best Friend's Wedding” actor filed for a “standard dissolution of marriage” from his wife, Prima Apollinaare, on June 21 in the Los Angeles County Superior Court. 

The couple were married for nearly 15 years and share two kids — Mabel Ray, 17, and Sally June, 15. 

RELATED: Ryan Lochte addresses claims that he cheated on his estranged wife amid divorce

Court documents obtained by TMZ revealed that the “Young Guns” actor requested joint physical and legal custody of their two daughters, but asked the courts to deny support payments for Apollinaare.

Instead, Mulroney is asking the courts to grant him spousal support for the two minor children.

People later reported that “neither side is asking for anything, and no one is denying anything.” 

The outlet clarified that the estranged couple aren’t arguing over the children, aren’t concerned about finances, and reportedly used mediators instead of lawyers. 

“They are friends and this is amicable and they were advised to file this way,” People reported. 

According to USA Today, Mulroney failed to disclose the couple’s official date of separation, but cited “irreconcilable differences” as the reason for the divorce.

As for the couple’s assets, Mulroney has stated that “all community earnings and accumulation during marriage through the date of separation” will be considered community property, per People. 

Mulroney and Apollinaare tied the knot in December 2010

Mulroney and Apollinaare started dating in 2008 — one year after his divorce from Catherine Keener.

The couple went on to welcome their first daughter, Mabel Ray, later that same year before welcoming a second daughter, Sally June, in 2009. They tied the knot in December the following year. 

The divorce comes more than a year after Mulroney and Apollinaare appeared together on Fox’s hit game show “We Are Family.” 

Apollinaare, an Italian-born singer-songwriter, sang “Will You Still Love Me Tomorrow” by the Shirelles before Mulroney, a professional cellist, joined her for a duet of “Islands in the Stream” by Dolly Parton. 

After Mulroney’s identity was revealed, Apollinaare revealed that they’ve been together for 19 years. 

The couple opened up about the experience in a February 2024 interview with Entertainment Weekly.

“They knew Prima's music and put together that we are this sort of secret couple even though we've been together for 20 years. Kind of a stealth Hollywood couple,” Mulroney said of the couple’s duet.

Apollinaare added that the pair “like to do karaoke together and we both like music so much.”

“It is great to come out and then turn to your own spouse and sing right into their face. That was unusual. I have to say, really, really fun,” Mulroney continued. 

ALSO ON MOD MOMS CLUB: Jen Affleck reveals how she and Zac Affleck maintain such a strong relationship

In addition to his two daughters with Apollinaare, Mulroney also shares a son Clyde, born in 1997, with Keener. 

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