VIDEO : Gwen Stefani and Blake Shelton to Perform Together

Courtesy Getty Images for iHeartMedia This off-screen pair is taking their romance center stage for the biggest award show of the spring. With six career Billboard Music Award nominations and two wins between them, it seems only fitting that Gwen Stefani and Blake Shelton take the stage at this year's ceremony to unveil their first duet together, "Go Ahead and Break My Heart." "This is one of my favorite songs I've ever written or recorded," Shelton previously said.