Show Biz Buzz 12/11: Blake Really Loves Gwen! Plus, Is Kevin Hart Sexy?

Blake Shelton says he is a changed man thanks to his girlfriend Gwen Stefani. Backstage at "The Voice" Monday, the country singer discussed his new song "Nobody But You," which is about life being bettered by a loving relationship. Gwen sings along, and Blake says he turned a page in his life; Roxette's Marie Fredriksson has died; and Kevin Hart wants to know why he hasn't been chosen as People's Sexiest Man Alive! Click below to see and hear all the details on the Show Biz Buzz!