During the Television Critics Association Press Tour on Sunday, the singers revealed that Shelton's uncomfortable advances towards Levine -- done in jest -- have now been turned to the newest male addition on the coaching panel.
"He's left me for Usher now," Levine joked. "So he gets to spend the season making Usher feel uncomfortable."
"And I think I'm doing a really good job of that, by the way," Shelton added. "I've said and done about everything that crosses the line."
While Shelton's focused on Usher, the rest of the fellas seem to have eyes for Shakira, who will also be joining the show for the upcoming season.
"She's so sexy," said host Carson Daly.
"She's a sweetheart," Levine agreed.
Season four of The Voice premieres March 25 on NBC. Watch the video for more.