Aaron Carter isn't after his Dancing With Stars partner Karina Smirnoff.

"I actually have a crush on Chelsie," he tells, referring to professional dancer Chelsie Hightower, 20. "I'm going to visualize that happening!"

He tells Us he's even made the first move.

"I just realized, 'This girl is really cute!' so I just went up to her and said, 'Are you single?'" Carter, 21, tells Us. "I'm going to leave it at that for now. I'm just going to put it out there and see what happens."

His partner Smirnoff, 30, has the tendency to go after men on the ballroom (ahem, Mario Lopez and Maksim Chmerkovskiy), but she says rumors that she wants Carter are "ridiculous."

Smirnoff also defended Carter, who was slammed on some blogs for seeming pompous after a recent radio interview.

During an interview Monday on 104.3 MY FM’s Valentine in the Morning, Carter declared, "There are no if's, and's or but's or possibilities or chances. I'm going to win Dancing with the Stars."

Smirnoff says her Dancing With the Stars wasn't being "cocky."

"He is humble and one of the most non-cocky people on the planet!" she tells Us. "All he said was, 'We're going to win.' They take that one sentence and isolate that."

Adds Carter, "Honestly, I was pumping myself. I'm a big believer in positive energy."