Dermot Mulroney has filed for divorce from his wife, Prima Apollinaare. The 61-year-old Chicago Fire actor submitted court documents on June 21, citing irreconcilable differences and seeking joint custody of their two daughters, Mabel Ray and Sally June. Mulroney, representing himself, also requested that legal fees be divided and that Apollinaare not receive spousal support. The couple, who have been married for 15 years, have yet to finalize the extent of their assets. They first connected over their mutual passion for music before officially tying the knot in 2010, following Mulroney’s divorce from Catherine Keener. Apollinaare, originally from Italy, is a singer-songwriter who has collaborated with Mulroney on various film projects in the past.