Katharine McPhee and Michael Morris
Smash alum Katharine McPhee was caught kissing her series director Michael Morris while the two were still married to other people in October 2013. Though it was eventually revealed that McPhee and her producer husband Nick Cokas had been separated for six months, Morris was still married to his actress wife of 10 years Mary McCormack. "She is so embarrassed she was caught," an insider revealed to Us of McPhee. "She should have known better!"