They've been cruising around Europe on a $130million yacht for her luxury 52nd birthday trip.

And Jennifer Lopez and Ben Affleck looked happier than ever on Saturday as they shared a passionate kiss at a port in Naples amid their sun-soaked, romantic holiday.

Jennifer, 52, looked sensational in a chic patterned kaftan and oversized sunglasses as she and her on-again beau prepared to climb aboard a smaller vessel before heading back to the super yacht.

Can't get enough: Jennifer Lopez and Ben Affleck looked happier than ever on Saturday as they shared a passionate kiss at a port in Naples amid their sun-soaked, romantic holiday.

Wow: Jennifer, 52, looked sensational in a chic patterned kaftan and oversized sunglasses as she and her on-again beau prepared to climb aboard a smaller vessel before heading back to the super yacht.

And since going public with their romance, Ben and Jennifer have been enjoying a luxury yacht holiday with stops in Monaco, St Tropez and Capri as well as Nerano.

Fun times: They've been cruising around Europe on a $130million yacht for her luxury 52nd birthday trip .

Back together: Jennifer and Ben haven't been shy about showing their affection towards each other amid their romantic European holiday

Ben has children Violet, 15, Seraphina, 12, and Samuel, nine, with his ex-wife Jennifer Garner, while Jennifer has 13-year-old twins Emme and Max with ex Marc Anthony