"I get a text from Madison with a start of a song called ‘Somebody Else's,' after a bunch of sessions that we'd done, and in those sessions there's a lot of confession and just

Gwen Stefani's new song "Somebody Else's" shares her love for Blake Shelton and shades an unnamed ex from a previous relationship.

On Friday, the "Just a Girl" singer released "Somebody Else's," the next single off her upcoming country-rock album, Bouquet, which details why she had to leave an ex -- and is feeling much better now that he's "somebody else's problem."

Stefani really gets into the details in the chorus, explaining: “Now that I’ve found the real thing / You don’t compare / And I don’t care that you’re somebody else’s