Credit: Kevin Winter/Getty Images

Kristin Cavallari has a new man in her life, and he's not a Hollywood star.

During a Tuesday radio appearance on On Air with Ryan Seacrest, Cavallari confirmed that she's dating Miguel Medina -- a cameraman from The Hills.

"That's not part of the show," Cavallari, 23, said when asked about Medina. "Yeah, I'm dating [Miguel] and that all I'm going to say about that."

Hooking up came naturally, she explained. "Well, you're together all the time, and it just sorta happens."

The reality star's previous loves include Laguna Beach's Stephen Colletti, Arizona Cardinals quarterback Matt Leinart, The Hills' Brody Jenner -- and she flirted with Justin "Bobby" Brescia, Audrina Patridge's on-and-off beau on The Hills.

Along with Stephanie Pratt, Jenner and The Hills creator Adam DiVello, Cavallari appeared on Seacrest's program to tout the MTV hit's 100th episode, airing Tuesday -- plus the series finale slated for July 13.

"Everybody's kind of coming at peace with their stories that we've been following along," DiVello said of the finale. "A few of them definitely found happiness and what they were looking for."

And DiVello announced that the live finale aftershow will feature two old Hills friends: Lauren Conrad and Whitney Port.

"It will be a big party," DiVello said.