Nicole Scherzinger dismisses cheating rumours

Nichole Scherzinger is fuming over rumours that she's cheating on boyfriend Lewis Hamilton with her Dancing with the Stars partner Derek Hough.

The Pussy Cat Dolls star insists that she is totally committed and in love with Hamilton. But the chemistry between Nichole and her partner Hough on the popular show seemed to have sparked some romance rumours.

However, she has dismissed the reports, insisting that it was strictly 'business,' reports the Daily Star.

"Been reading the net & seeing the craziest stories... Derek is like a little brother to me. Everyone knows how in luv (sic) & committed I am to Lewis," Nichole wrote on her Twitter.com page.