Katharine McPhee, Elyes Gabel 'dating'

Katharine McPhee is reportedly dating Elyes Gabel.

The pair was spotted kissing while filming their CBS television show Scorpion in California last month. Now Us Weekly has apparently confirmed the two are dating.

The alleged couple attended a private premiere of their show earlier this week and are said to have been "inseparable" and to have gotten "cozy all night", an insider told Us Weekly.

Katharine married Nick Cokas in 2008 and the couple apparently separated in 2013, filing for divorce in 2014 after six years of marriage.

The former couple supposedly "have an amicable relationship and will remain friends", Katharine's rep previously told Us Weekly.

Scorpion, which premiered on September 22, features Katharine as a waitress who is a single mother of a child prodigy.

Elyes, who has appeared in World War Z, Welcome to the Punch and Casualty, plays a tech master working for Homeland Security.

"We get to do a lot of different things. Like, my first day of shooting during production, I was running and bombs were going off. I went from singing and dancing to running away from bomb explosions and nuclear disasters being an imminent threat to society," Katharine previously told TheWrap about the series.

"It's got a lot of heart and humour and heroes, basically, And each episode, the characters get to kind of trade off on which ones are the heroes and which ones are the heart."