Incubus frontman Brandon Boyd has split with his longtime girlfriend, Estee Lauder supermodel Carolyn Murphy.

The couple - who lived together in Los Angeles - reportedly "grew apart" because the 29-year-old singer spent too much time touring with the hit metal band, reports

Boyd - who confirmed the spilt on his return from an extended world tour - is set to appear alongside Joss Stone, Alanis Morrisette, John Legend and Keith Urban in a new Gap commercial.