The Hills' Kristin Cavallari has gone public with her new boyfriend. The two were spotted arm in arm earlier today at Los Angeles International Airport. Life & Style can exclusively reveal he's Miguel Medina, a cameraman on The Hills.

"Things are going really well," an insider tells Life & Style about the new couple. "They've been dating for a couple months. It's very serious."

"This will definitely not be a part of the show," adds the insider. "Kristin won't let her real private life be a part of the show."

Photo Credit: Startraks