Hayden Panettiere has been getting cozy with Ukranian boxing champ Wladimir Klitschko, 33, leading many to speculate they are dating. The 'Heroes' actress, 20, spent the past few weeks in Miami after he invited her to join him in Florida for the New Year. And don't let the 13 year age difference fool you -- Panettiere has been known to date much older guys. They were spotted together on Thursday when he dropped her off at the airport. So who is this guy and how did he manage to steal her heart?