Is someone mixing business with pleasure... again? Katharine McPhee was reportedly caught kissing her co-star Elyes Gabel on the set of their new CBS series "Scorpion."

McPhee looked perfectly blissful as she locked lips with Gabel, even wrapping her arms around him as photographers snapped pictures of the pair.

The Daily Mail reports that the co-stars were giggly and playful on set. 

Newly-single McPhee appeared to be enjoying herself. After the kissing session, pictures show the actress/singer even doing a cartwheel in the parking lot alongside her colleague and rumored beau.

In May, Mcphee filed for divorce from her husband of six-years, Nick Cokas.

A rep for the American Idol runner-up released the following statement:

"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."

So who is the guy McPhee appears to be so fond of?

Gabel is a British actor who appeared in HBO's "Game of Thrones" and the 2013 film "World War Z." He will soon hit the big screen in Christopher Nolan's "Interstellar" and J.C. Chandor's "A Most Violent Year."

Gabel also scored the lead role in "Scorpion," alongside McPhee. According to IMDB, the CBS drama is about "an eccentric genius [who] forms an international network of super-geniuses to act as the last line of defense against the complicated threats of the modern world."

The display of affection between McPhee and Gabel is not the first time the actress has snuggled up to a co-star.

According to TMZ.com, McPhee was caught kissing her "Smash" director Michael Morris in October 2013. Both McPhee and Morris were married at the time. The website also reports that McPhee insisted in court documents that she and Cokas were separated at the time of the lip-lock in question.

Morris and his wife, actress Mary McCormack, are rumored to have maintained their marriage after the two were spotted getting on a plane together in July.

However, TMZ reports that Cokas recently filed new divorce papers against his soon-to-be ex-wife, claiming that he and McPhee had not yet separated at the time of her photographed kiss with Morris.

According to TMZ, the separation date determines when McPhee's "money becomes hers alone."