Television March 15, 2016 Hot Chemistry! Gwen Returns as Blake's Guest Mentor on 'The Voice' Gwen Stefani is back on “The Voice” as boyfriend Blake Shelton's guest mentor! Check out the clip as the couple helps Team Blake going into the battle rounds. Watch “The Voice” Mondays and Tuesdays at 8 p.m. on NBC. #BlakeShelton #GwenStefani #HookupsAndBreakups #Television #TheVoice #TrendingStories More Too Cute! Gwen’s Son Zuma Channeled Blake for Kids’ Choice Awards Gwen & Gavin’s Former Nanny Is Pregnant! Are Gwen Stefani & Blake Getting Married?