Less than two months after Zano, 33, split with girlfriend of three years Haylie Duff, the actor began romancing costar Dennings, 25, two sources tell Us Weekly. "Kat and Nick are getting to know each other right now," a source explains of the couple, who play love interests on the CBS comedy 2 Broke Girls. "They are not exclusive but have gone on dates." On December 29, the hot new couple caught a showing of the dark comedy Young Adult. "My boyfriend and I left the theater feeling like really great people," Dennings tweeted. The couple took their budding romance public January 2 when they sat courtside (and next to Ashton Kutcher!) during the L.A. Lakers vs. Houston Rockets basketball game. At one point, Dennings even rested her head on Zano's shoulder.