Monica Schipper/WireImage Dermot Mulroney filed for divorce from Prima Apollinaare on June 21 According to documents obtained by PEOPLE, theChicago Fireactor cited irreconcilable differences and asked for joint custody of their two daughters The pair met in 2008 and have been married for 15 years Dermot Mulroneyhas filed for divorce from his wife,Prima Apollinaare. According to court documents obtained by PEOPLE, the 61-year-old actor signed a petition to dissolve his 15-year marriage on Saturday, June 21. Mulroney, who appears to be representing himself, cited irreconcilable differences and listed their date of separation as "TBD." TheChicago Fireactor also asked that attorneys' fees be split between them, and that they share joint physical and legal custody of their two daughters: Mabel Ray, 17, and Sally June, 15. Additionally, Mulroney requested the termination of the court's ability to award Apollinaare spousal support, but wants to reserve his right for her to pay him. Michael Tullberg/Getty While the pair has not fully established "the nature and extent" of assets, Mulroney stated that "all community earnings and accumulation during marriage through the date of separation" will be considered community property. Mulroney and Apollinaare started dating in 2008 and welcomed their first daughter that same year. Shortly after, they had their second daughter before officially tying the knot in December 2010. The couple first bonded over their shared love for music — along with acting, Mulroney is a professional cellist with credits in movies such asPlanet of the Apesand some in theMission: Impossiblefranchise, and Apollinaare is a singer-songwriter. Apollinaare, who changed her name from Tharita Cutulle for unknown reasons in 2015, is originally from Italy. Although she hasn't shared much about her childhood, she has said that music was always her passion. "[I] got into music since I was born," the songstress told the music labelLost In The Manorin 2023. "My mom is a singer. My dad played Trumpet and piano." David Crotty/Patrick McMullan/Getty She has also joined her soon-to-be ex on some of his film projects. In 2010, she was listed as one of Mulroney's producing partners for a biopic he was set to direct, per the Associated Press (viaThe Hollywood Reporter). Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Later that same year, Mulroney revealed to theNew York Postthat Apollinaare was not a fan of his horror movies, likeScream IV. "I don't think she'll probably even see this movie because I know what her tolerance is," he said. "She can't even look at half of the posters." Read the original article onPeople