Chelsea Handler got into a heated argument with a male friend at a party at a private home in Beverly Hills on Sunday. While Leo DiCaprio, Zac Efron, Mary J. Blige and Diddy partied on, the “Chelsea Lately” host, a witness reports, “looked upset and stormed away from the friend twice. He went chasing after her both times and then they kept arguing. It was like he was sharing information with her that pissed her off.” Perhaps he was warning her about the charms of her new love interest, Andre Balazs? Handler’s rep didn’t get back to us.