Momento Caras \\ Nikki Sixx And Denise Richards Split, Remain Friends

Denise Richards and Motley Crue bassist and radio host Nikki Sixx have ended their brief romance, TooFab has exclusively learned.

Sources tell TooFab that the pair, who are neighbors in L.A., remain good friends, but that they decided that their relationship is better as pals and as neighbors.

A week after word got out in mid-December that Richards, 39, and Sixx, 52, were dating, they went public and were spotted hand-in-hand outside a movie theater in Calabasas, Calif.

Last week Nikki Sixx posted a new video to promote his upcoming book 'This Is Gonna Hurt: Music, Photography and Life Through the Distorted Lens of Nikki Sixx.' The book is due for release through HarperCollins' William Morrow imprint on April 26, 2011. 'This Is Gonna Hurt' will include more than two dozen of the author's images -- he will incorporate the stories behind the pictures and how they came to be, including interviews with the subjects so readers can see "what life is like for those whom society has labeled as freaks."