'Anyone But You' Star Dermot Mulroney Files for Divorce After 15 Years

Max Sterling, 6/24/2025Dermot Mulroney and Prima Apollinaare are amicably divorcing after 15 years, seeking a low-key separation without the usual Hollywood drama. While Mulroney files for spousal support, the couple aims for joint custody of their two daughters, focusing on a harmonious co-parenting approach.

Saturday saw Mulroney, 61, quietly file for divorce. The paperwork cited those famously vague "irreconcilable differences" — that catch-all phrase that's become Hollywood's equivalent of a musical fade-out. Curiously, the separation date remains undefined, floating in that nebulous space where endings often linger.

But here's where their story hits a different chord: Rather than orchestrating the usual Hollywood divorce circus (complete with dueling PR teams and tabloid drama), they're taking the road less traveled. The couple's choosing mediators over attorneys — practically unheard of in an industry where divorce papers typically read like battle plans.

"No one is asking for anything, and no one is denying anything," whispers an insider close to the situation. "They're friends and this is amicable." Such statements usually warrant an eye-roll, but their actions seem to back up the peaceful narrative.

Their love story? Pure Hollywood serendipity circa 2008. The relationship produced two daughters — Mabel (17) and Sally (15) — and blossomed into what Mulroney once dubbed their "stealth Hollywood couple" status. In an era of Instagram-everything, they managed to keep their relationship refreshingly low-key.

The most fascinating movement in their duet? Their shared musical passion. Mulroney — bet you didn't know he's a legit cellist who played in "Planet of the Apes" — found his melodic match in Apollinaare. Their home transformed into something of a private Carnegie Hall, packed with enough instruments to outfit a small orchestra.

There's a dash of financial intrigue in the divorce filing — Mulroney's seeking spousal support while trying to block the court from awarding the same to Apollinaare. It's an unexpected twist that adds a minor key to their otherwise harmonious separation.

Just months back, they appeared on "We Are Family," belting out "Islands in the Stream" together — talk about timing that'd make even a soap opera writer cringe. During the show, Apollinaare gushed about their home jam sessions: "Of course with my husband, I play with him all the time in the house. We all play instruments."

The plot thickens with recent appearances giving zero hints of trouble. Heck, this February, Apollinaare was still singing Mulroney's praises — though she did skip "Scream VI." (Can't blame her — horror's not everyone's jam.)

For Mulroney, this marks divorce number two, following his 17-year run with Catherine Keener that wrapped in '07. His words about falling for Apollinaare on "The Rosie Show" — "A lot of it doesn't make sense, but you can't deny your heart" — now echo with an almost prophetic resonance.

At least they're hitting the right notes regarding co-parenting, seeking joint custody of their girls. Maybe some melodies just aren't meant to play forever, but they seem determined to keep the discord to a minimum.

Hollywood's latest relationship swan song comes with an unexpected grace note — Dermot Mulroney and Prima Apollinaare are calling it quits after 15 years of marriage. The news broke just as Mulroney's latest film "Anyone But You" continues its impressive box office run, adding a bittersweet coda to what's been a remarkably understated Hollywood romance.Saturday saw Mulroney, 61, quietly file for divorce. The paperwork cited those famously vague "irreconcilable differences" — that catch-all phrase that's become Hollywood's equivalent of a musical fade-out. Curiously, the separation date remains undefined, floating in that nebulous space where endings often linger.But here's where their story hits a different chord: Rather than orchestrating the usual Hollywood divorce circus (complete with dueling PR teams and tabloid drama), they're taking the road less traveled. The couple's choosing mediators over attorneys — practically unheard of in an industry where divorce papers typically read like battle plans."No one is asking for anything, and no one is denying anything," whispers an insider close to the situation. "They're friends and this is amicable." Such statements usually warrant an eye-roll, but their actions seem to back up the peaceful narrative.Their love story? Pure Hollywood serendipity circa 2008. The relationship produced two daughters — Mabel (17) and Sally (15) — and blossomed into what Mulroney once dubbed their "stealth Hollywood couple" status. In an era of Instagram-everything, they managed to keep their relationship refreshingly low-key.The most fascinating movement in their duet? Their shared musical passion. Mulroney — bet you didn't know he's a legit cellist who played in "Planet of the Apes" — found his melodic match in Apollinaare. Their home transformed into something of a private Carnegie Hall, packed with enough instruments to outfit a small orchestra.There's a dash of financial intrigue in the divorce filing — Mulroney's seeking spousal support while trying to block the court from awarding the same to Apollinaare. It's an unexpected twist that adds a minor key to their otherwise harmonious separation.Just months back, they appeared on "We Are Family," belting out "Islands in the Stream" together — talk about timing that'd make even a soap opera writer cringe. During the show, Apollinaare gushed about their home jam sessions: "Of course with my husband, I play with him all the time in the house. We all play instruments."The plot thickens with recent appearances giving zero hints of trouble. Heck, this February, Apollinaare was still singing Mulroney's praises — though she did skip "Scream VI." (Can't blame her — horror's not everyone's jam.)For Mulroney, this marks divorce number two, following his 17-year run with Catherine Keener that wrapped in '07. His words about falling for Apollinaare on "The Rosie Show" — "A lot of it doesn't make sense, but you can't deny your heart" — now echo with an almost prophetic resonance.At least they're hitting the right notes regarding co-parenting, seeking joint custody of their girls. Maybe some melodies just aren't meant to play forever, but they seem determined to keep the discord to a minimum.