"Elyes is great, but they had their issues, like any couple does," an insider added to "Entertainment Tonight." "They split on good terms."
The former "American Idol" finalist and Gabel met through "Scorpion" and were first linked in August 2014 when they were spotted kissing between takes on set.
The actress had filed for divorce from Nick Cokas a few months previous and finalized her divorce in February.
"After six years of marriage, and having been separated for the past year, Katharine McPhee has filed for a dissolution of marriage from Nick Cokas," the star's rep said in May 2014. "The two have an amicable relationship and will remain friends."
McPhee came to fame after competing on "American Idol" Season 5 and last released the album "Hysteria" in September. She is also known for playing Karen Cartwright on the NBC series "Smash."
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