Kristin Cavallari is playing coy about former fiance Jay Cutler's appearance in Dancing with the Stars' audience during Monday night's performance show and not commenting on recent reports she's rekindled her relationship with him.

"No," the former The Hills star told Access Hollywood reporter Shaun Robinson following Monday night's Dancing with the Stars performance show when asked if she has gotten back together with the NFL quarterback after he seen in the crowd. 

"Nope, not talking about it," Cavallari's professional partner Mark Ballas interjected with a smile. "I am her dance coach, friend and protector."

In addition to denying she and Cutler are dating again, Cavallari -- who also appeared on Laguna Beach, MTV's The Hills predecessor, while she was in high school -- also playfully brushed off whether she knew how her ex-fiance came to attend the show and suggested his appearance was news to her.

"Did you?" Cavallari said coyly when Robinson noted she had seen Cutler in the audience. "I don't know. That's interesting... That's funny. I didn't see him in the front."

"He just used his legs and walked right in," Ballas told Access Hollywood.

"Interesting. I'm not sure how that happened. Mark obviously invited him," Cavallari joked. "Oh, Mark!"

"Oh me," Ballas responded sarcastically.

"Mark, you did it again!" Cavallari said playfully.

The reality TV star and Cutler got engaged in April after just seven months of dating only to call off their engagement in July, reportedly leaving Cavallari "dumped," "absolutely devastated" and "in shock" over how the dream wedding she was planning for the spring had ended.