And another celebrity couple bites the dust: American Idol finalist and Smash star Katharine McPhee has filed for divorce from her husband Nick Cokas.

"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 two have an amicable relationship and will remain friends. They ask that people respect their privacy during this time," a rep for the pair said.

In the year that the two were separated, McPhee pulled a Kristen Stewart and was photographed kissing her married Smash director, Michael Morris. While Morris and his wife has since seemed to reconcile since the scandal, McPhee and Cokas were unable to do the same.  "It was just time... They'd grown apart and weren't right for each other anymore," a source said.

McPhee and Cokas wed in February 2008.