The celebrity world went into meltdown on Tuesday (October 22, 2013) after posted images of Katharine Mcphee kissing her former Smash director Michael Morris, despite both being married to other people.

Morris is married to the actress Mary McCormack - who you may remember played Howard Stern's wife in Private Parts - and the pair have three young daughters.

Katharine is married to the 47-year-old producer Nick Cokas, though they have no children.

McPhee and Morris were openly holding hands and cuddling each other in Hollywood this week - leaving fans a little confused. Well, the news is that Katharine and Nick have been separated for 6 months and are living apart.

"They've been separated for six months," a friend of the singer told Life & Style. "Nick continues to co-manage her music"

Currently it's unclear where Michael's relationship with Mary stands, though given the PDA in Los Angeles, it's likely that he and split from his wife too.

Earlier this year, Katharine explained that she and Nick and put starting a family on hold.

"I once thought that by now I'd have lots of children, but actually I'm really enjoying being able to go from point A to point B and the only worry I have is have my dogs been walked," she said. "I'm selfish right now, but that's how and where I should be. The thing is, work is the thing I love the most."

The couple first met in 2005 when they performed in the L.A. production of The Ghost and Mrs Muir and soon began a relationship. They got engaged in 2007 and the pair were wed in Beverly Hills on February 2, 2008.

Katharine McPheeKatharine McPhee Split With Her Husband Months Ago