It's over for Dermot Mulroney and Prima Apollinaare.

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According to ABC News, Dermot filed for divorce from Prima on Monday, June 23, citing irreconcilable differences. The actor, best known for his roles in My Best Friend's Wedding, Friends, and Zodiac, had been married to the musician for 15 years. They share two children, daughters Mabel Ray, 17, and Sally June, 15.

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Dermot married Prima, who previously went by Tharita Catullé, in 2010. It was his second marriage behind Catherine Keener, whom he split from in 2007 after 17 years of marriage and one son, Clyde Keener Mulroney, 26.

In court documents, Dermot reportedly requested joint physical and legal custody of their kids. People reported that he also asked for spousal support and for the court to deny Prima from receiving it from him — however a source refuted those claims. "No one is asking for anything," the insider told People, "and no one is denying anything. They are not arguing over the children nor money."

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According to the source, their split is "amicable." "They used mediators, not lawyers, as they are friends and this is amicable," the source shared. "They were advised to file this way."

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The divorce comes just over a year after the two made a rare appearance for the Fox game show We Are Family. In an interview with Entertainment Weekly, Dermot gushed over how "fun" it was to perform with Prima on the show.

"We both like to do karaoke together and we both like music so much," Prima added. "It was actually, for me, it was really an amazing experience to be on television and singing. Of course, with my husband, I play with him all the time in the house. We all play instruments. We have harps, guitars, ukulele, pianos, you name it. So we're all musicians, but to actually do it and just have people winning money is also very rewarding. I've been singing since I was very little and music is my heart. So it was a great experience. They made it so easy for us. We had so much fun. I wish we could do it again."