February 2, 2005 — “Las Vegas” hottie Nikki Cox has broken off her engagement to Bobcat Goldthwait and is now dating another comic, Jay Mohr. Cox and Goldthwait dated for five years after meeting on “Unhappily Ever After.” But Cox should be careful of Mohr, whom she met on “Las Vegas” — the comic was at Sundance “hitting on every woman in sight,” our spies say. At one point, Mohr waltzed into the Converse suite at the Motorola Lodge, looked at a young woman and leered, “You should be on film,” while trying to touch her. The indie actress shot back: “I already am!”