Backstage sources on the show claim that she and fellow Voice UK judge Ricky Wilson have been getting flirty behind the scenes.
Ricky was even given a massage by the How We Do hitmaker on set of the blind auditions in Salford, Manchester.
“You should’ve seen me before I came out," Ricky told the audience at a recording of the show this week. “Rita was putting oil on me.
"She said ‘smell this’… She was putting oil on me.”
Rita replied: “He’s such a flirt" as the Kaiser Chiefs singer kissed her on the cheek.
A source told the Daily Mirror newspaper: “It was very flirty
"[But] To make sure it wasn’t taken the wrong way, he then kissed Tom Jones on the cheek."
They added: “They were holding on to each other’s arms, too. They have clearly hit it off.”
Rita and Ricky join Will.i.am and Sir Tom Jones on the fourth series of The Voice UK, which will begin on BBC One in the New Year.