News Gwen Stefani Goofs Off With Boyfriend Blake Shelton, Pal Alicia Keys on 'The Voice' Set By Jennifer Drysdale 11:50 AM PST, February 9, 2017 Now Playing hh:mm:ss Gwen Stefani is slipping right back into her old chair on The Voice.The 47-year-old singer got in some bonding time with boyfriend Blake Shelton and fellow judge Alicia Keys while on set of the singing competition show on Wednesday. EXCLUSIVE: Blake Shelton Jokes About 'Hooking Up' With Gwen Stefani in New 'Voice' Preview"Gwen is pretending like she don't know what Snap is… liar!" Keys said in a video on Stefani's Snapchat, after hilariously giving her a tutorial on her account."Gotta get a good chin profile. Don't want to get my five chins in there," Shelton joked in another Snap, after Stefani poked fun at his double chin while photographing him from below.As for Adam Levine? Well, he made a cameo in a few of Keys' Snapchats as well. WATCH: Celine Dion Joins Team Gwen Stefani as a ‘Voice’ Battle Round AdvisorWhile Stefani and Shelton seem to have toned down the PDA on set, they couldn't keep their hands off each other during a family lake trip on Monday.According to an eyewitness, the pair was spotted "kissing and taking selfies" while at a park in Big Bear Lake, California. "They looked happy and loved up, showing a lot of PDA, hugging and kissing," the eyewitness told ET.See more in the video below.Blake Shelton and Gwen Stefani Share a Steamy Kiss During Family Lake Trip -- See the PDA Pic!