Katharine McPhee
Katharine McPhee Reuters

Katharine McPhee and husband Nick Cokas are calling it quits. The former “American Idol” finalist and “Smash” star was caught cheating on her husband with “Smash” director Michael Morris in October, and though they tried to work on their relationship, it seems they weren’t able to fix the damage.

A source told the news site other people did not play a role in the breakup. "It was just time," a source told People. "They'd grown apart and weren't right for each other anymore."

A rep for McPhee told People, "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."

Morris, who was also married during the cheating scandal, has reportedly reconciled with wife Mary McCormack.

The “American Idol” alum, 30, married the music producer, 47, in 2008. They had been separated for six months when her scandalous affair with Morris occurred. Apparently, they had been seeing each other for a while.

McPhee recently starred in made-for-TV movie “In My Dreams,” a romantic story about turning dreams into reality.