Tom Sandoval and Raquel Leviss used code names for each other to avoid suspicion during their affair, according to a new report.

Sandoval came up with the idea for the pseudonyms, and Leviss was happy to oblige, TMZ reported Monday.

The cover band frontman allegedly saved the former pageant queen’s contact information in his cellphone as “Jamie,” while her secret nickname for him remains unknown.

Friends of the “Vanderpump Rules” co-stars reportedly knew of the code names because Sandoval used “Jamie” in-person on occasion.

Although the bar owner’s then-girlfriend, Ariana Madix, never “cracked the code” herself, the outlet noted she is now aware of the pet names.

A rep for Leviss had no comment when contacted by Page Six, while Sandoval’s rep didn’t immediately return our request.

Sandoval, 40, claimed in a tell-all interview with Howie Mandel last week that Madix, 37, turned “a blind eye” to his secret romance with Leviss, 28.

“She had heard things and seen things about Raquel but was very much turning a blind eye or just trusting me, I guess,” he alleged.

“I was seeing Raquel as often as I could — which I know that sounds horrible — and FaceTiming her all the time and, like, Ariana didn’t even notice because that’s just how separate our lives were.”

While Madix may have “seen things,” it’s obvious Sandoval kept portions of his and Leviss’ tryst incognito given the new report that they adopted code names.

After Sandoval and Leviss’ affair came to light in early March, it appeared the duo were planning to stay romantically involved, but he told Mandel that they were taking a “break.”

Leviss, for her part, has checked into a mental health facility for long-term treatment, while Sandoval has been spotted out and about with former co-star Billie Lee.

Madix, meanwhile, was seen thriving at Coachella all weekend long — and even making out with a new man.