Usher (ROBYN BECK/AFP/Getty Images)

Usher was spotted lunching alone at the Shore Club’s new poolside restaurant Terrazza in Miami on Friday. But don’t feel too bad for the solo-rolling R&B star: He occupied himself just fine by “flirting and laughing with an attractive hostess,” a spy says, adding, “He seemed to be asking her many questions to spark up conversation.” The crooner, who is dating manager Grace Miguel, also spent time checking his iPhone and chowing on an arugula salad till a bodyguard met him.