DespiteThe Voice mentors' new romance, Levine says he's still Shelton's favorite on the show. "First of all, he's always been mine, will always be mine, nobody's else's," the rocker joked with ET, "and I don't appreciate that you would ever say he's not all mine."
Stefani doesn't seem to mind Levine being so territorial over Shelton as long as the pair keeps her laughing. "I literally laugh all the time because of these guys," the No Doubt front woman said. "Me and Pharrell [Williams], we have smile headaches when we leave work. We have to do massages, take it down, because it's crazy."
Shelton also chatted with ET about whether he thinks it's a good idea for Stefani to bring her sons, Kingston, 9, Zuma, 7, and Apollo, 20 months, to the Kids' Choice Awards when he hosts the show in March. Check out the video to see what he said.