DWTS pros Maksim Chmerkovskiy and Peta Murgatroyd seen together in Vegas

Maksim Chmerkovskiy and Peta Murgatroyd are showing off their sizzling moves, this time on each other. The professional dancers from the ABC's "Dancing with the Stars" were seen getting hot and heavy over the weekend, complete with a steamy kiss!  Fresh off her mirror ball trophy win, Peta, 30, was in Las Vegas with Maksim, 32, over the weekend. During the day they hung out at the Encore Beach Club, where the swimsuit-wearing twosome openly cuddled in front of guests. Later, they took things up a notch when they went to the XS nightclub. Wearing a pink dress that was practically painted on, Peta made out with Maksim, who had his arms wrapped around her.Although they have denied that they are dating, People reports that Peta “had a crush” on her competitor for a long time. “It's early but I think this will last," a source told the magazine. "They’re a good match, a good couple. She says they’re not dating but they are. Everyone knows it.”