Gavin Rossdale finds marriage to Gwen 'challenging'

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.- BANG! SHOWBIZ