Gavin Rossdale finds marriage "challenging." The former Bush singer says he sometimes feels like "an appendage" because of the publicity his wife Gwen Stefani attracts - and hates being described as her "rocker hubby."

Gavin wrote on his MySpace page: "It's been a tough few years for me because I've been lost in how to define myself in the present tense. With that glare of the publicity on us, how can I not feel like an appendage at times?"

"It takes a tough man to be married to a force of nature like Gwen. 'Rocker hubby,' if I ever see that phrase again. It's challenging and it forces a lot of humility."

Gavin and Gwen met 12 years ago when No Doubt were supporting Bush on tour. Gavin and Gwen, who have been married for five years, have a two-year-old son, Kingston, and are expecting another baby in the summer.

Gavin - who is preparing to launch his solo career next month - is also father to model Daisy Lowe.

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