These contestants on “Dancing With the Stars” just can’t seem to keep it in their pants. Season two 2006 winners, Drew Lachey (brother of Nick and a founding member of the boy band 98 Degrees), and his dance partner Cheryl Burke, have been allegedly sexing it up while on a national tour to promote the show. The only problem with this is that Drew is a married man. In fact, his wife Lea was often seen cheering him on in the audience on TV, while pregnant with their daughter, who is now 2.

Dancing with the Stars has been rocked by a major sex scandal involving two of its most popular contestants — married dad Drew Lachey and his partner Cheryl Burke.

The Season Two champion couple had an affair during the show’s nationwide tour which ended last month, insiders tell Star.

“They didn’t go very far to cover it up,” one tour insider says. “Cheryl was constantly draped all over Drew. They held hands, had their legs intertwined and were always touching inappropriately.”

Cheryl’s then-boyfriend Matthew Lawrence discovered his girlfriend was cheating when he walked in on the pair, catching them in the act, according to several sources!

Now insiders fear that Drew, father of a 2-year-old girl, could find his marriage to high-school sweetheart, Lea, wrecked.

“Drew Had To Be Restrained”
Sources say Matthew found his girlfriend cheating when he went to retrieve something from her dressing room as the tour hit Jacksonville, Fla. on January 22, an eight-week-long Star investigation uncovered. They say he ran out screaming after seeing Cheryl and Drew having oral sex.

The insiders say that the next day, as tour members prepared to get on the bus to leave town, Drew had to be restrained as he ranted at Matthew and his brother, Joey in the parking lot. “If you talk about this, I’ll bury you Matt. I’ll bury you Joey. I’m serious I will hurt you,” he screamed.

While Matthew told Star, “There are too many things going on. I can’t talk about it,” lawyers for both Drew and Cheryl are strongly denying any affair between the two.

[From Star Magazine]

What a mess. Of course, this is Star Magazine, so who knows how much of this is true. But the show does seem to bring out the horny in its contestants. Season three contestant Mario Lopez hooked up with his dance partner, Karina Smirnoff; and country singer Sara Evans had to leave the show due to an ugly divorce during which her husband accused her of having an affair with her dance partner, Tony Dolovani. The accusations were never proven, and Sara accused her husband of having affairs and watching Internet porn while their children were in the room. If Drew was fooling around, his image as the devoted family man is destroyed. He has a lot to lose if these rumors reach his wife’s ears.

Any guesses on who’s going to hook up this season? My money’s on Kristi Yamaguchi and Adam Corolla.

Update: People Magazine quotes Lachey’s rep as saying this story is “completely false and cannot be further from the truth” and that it’s an old rumor that started when they first started dancing together.