Jennifer Lopez and her boyfriend Casper Smart lounged on the deck of a yacht off the coast of Florida last week. The duo got away to Miami Beach, where they celebrated New Year's at Amnesia. J Lo and Casper kissed and danced during the night out, but their trip wasn't all about couple's time. J Lo's twins, Max and Emme, also joined them in the sunny spot and J Lo was spotted shopping with Emme over the weekend while Casper went go-cart racing with friends. Jennifer and Casper were back together yesterday strolling hand in hand around Miami's high-end Lincoln Road. Their new romance was one of the hottest headlines of 2011, and it looks like the relationship is going strong as they kick off 2012.