Gwen Stefani Admits Something Stunning About Blake Shelton. Blake Shelton and fiancé Gwen Stefani have been together since 2015, but when it comes to writing music together, don't get your hopes up. Stefani revealed on DJ Khaled's podcast that Shelton doesn't write much anymore, disappointing fans hoping for more collaborations. While they have written a few songs together, Shelton's focus has shifted over the years. Despite not writing together regularly, Stefani still values Shelton's input and guidance in the music industry. Although fans might have to wait for new collaborations, Stefani recently surprised fans with a tribute to Shelton on her fingernails. While their songwriting partnership might not be as active as before, their love and support for each other continue to shine through in their music and relationship.