Blake Shelton and Gwen Stefani performed their romantic duet "Nobody But You" on "The Tonight Show."

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The couple performed the song from home on Sunday. Shelton played the guitar while Stefani wore a shirt that expressed her love for "The Voice" Season 18 coach.

"I don't wanna live without you/ I don't even wanna even breathe/ I don't wanna dream about you/ Wanna wake up with you next to me," the couple sang during the chorus.

"Nobody But You" appears on Shelton's 2019 compilation album "Fully Loaded: God's Country."

Shelton and Stefani released a music video for the song in January which featured the pair going on a date together.

Shelton told Fallon how he and Stefani are doing at home in Oklahoma during the COVID-19 pandemic as Stefani gave him a haircut.

"Literally, it's like 'Little House on the Prairie' out here. She makes bread. I've been building a fence and gardening. We're pretty self-sufficient out here," Shelton said.