Jennifer Lopez and Capser Smart ring in the new year in Miami

Gina DiFalco

Singer Jennifer Lopez appears backstage after winning the favorite Latin music artist award during the 39th American Music Awards, held at Nokia Theatre in Los Angeles on November 20, 2011. UPI/Jim Ruymen

Jennifer Lopez and her new boyfriend Casper Smart were seen taking in a weekend of partying on yachts, clubbing, dining and dancing in Miami Beach, Florida.

The couple were seen ringing in the new year together, showing they have no plans of slowing down.

They kicked off the weekend on Thursday night by clubbing at Amnesia, People reports.

They were very sexy with each other, dancing and bouncing around and making out," said a source. "They couldn't help but attract attention, although Jennifer was trying to lie low from onlookers."

Another clubgoer said of the mother of twins, Emme and Max, Jennifer looked very happy. Although she kept to herself, there was no question she was really enjoying the club and her boyfriend."

Lopez and Smart then took her 3-year-old twins with estranged husband Marc Anthony on a friends $10 million yacht on Friday afternoon. On New Years Eve, the couple and a group of friends had a private dinner at the Soho Beach House.

E! Online reports that Lopez's ex, P. Diddy, was also in Miami when she and Smart were. P. Diddy hosted a party that Vivica A. Fox, Rihanna, Real Housewives of Atlantas Nene Leakes and Queen Latifah attended.