Sexy Shannon Elizabeth has been caught cheating with her dancing partner just days after revealing her teacher boyfriend was delighted with her dance floor dude.

The star and Dancing With The Stars pin-up Derek Hough were caught on camera hugging, kissing and rolling around in the sand on a Malibu, California beach on Thursday as they prepared for next week's dance-off on the hit talent show.

The romantic sunset moment comes just days after Elizabeth told In Touch magazine her boyfriend couldn't have been happier when she landed boyish blond 22-year-old Hough as her partner.

The unnamed beau initially feared the actress would be paired with dancer Maksim Chmerkovskiy, who became a sex symbol when he partnered with Spice Girl Mel B last season.

Elizabeth says, "My boyfriend saw Derek walk through the door and it was OK. He knows I've never dated a blond. Plus, Derek's 22 and I'm a few year's older."

Elizabeth, 34, is divorced from actor Joe Reitman.

(This news article provided by World Entertainment News Network)