He's hot. She's hot. And both stars haven't been in a serious relationship in almost two years. In 2011, Bradley and Renee Zellweger ended their relationship, and Bar Refaeli and Leonardo DiCaprio finally called it quits. So it seems like 2013 may be the ideal time for this leggy model to move on with another Hollywood heavyweight … and for Brad to move on with someone of his same caliber.