"Dancing With the Stars" front-runners Derek Hough and Nicole Scherzinger probably owe a lot of that great dancing to their undeniable chemistry. Hough's sister, former "DWTS" dancer Julianne Hough, said the pair are just compatible offscreen.

"They love each other! They laugh and have fun," she dished to MTV News. "They're basically like the same person, but a guy and a girl. They have so much fun together, and she's great."

Derek and Nicole have moved on from [article id="1635464"]the romance rumors[/article] that were plaguing them early in the season. The Pussycat Dolls frontwoman, who dates race car driver Lewis Hamilton, shrugged off the reports when MTV News asked her about them recently.

"I don't even know where they get these stories sometimes," she said. She even tweeted about the situation: "Been reading the net & seeing the craziest stories ... Derek is like a little brother 2 me. Everyone knows how in luv & committed I am 2 Lewis!"

With Derek out of the picture, is there anyone else on the show Nicole has a crush on? "I have a softness in my heart for Buzz [Aldrin]. I kind of have a crush on him," she said about the astronaut, who was later [article id="1635574"]voted off the show[/article]. "I haven't [told him], but I just show it to him when I hug. He's just the sweetest guy, and his wife is the cutest thing ever, people. I don't know if people at home see it, but whenever Buzz is onstage or anywhere near her, she's always so excited."

Do you think Derek and Nicole can win "DWTS"? Tell us in the comments!