The actress, 44, was spotted in the Caribbean island of St. Barts with her 58-year-old ex, Andre Balazs.
They were seen frolicking in the sun together and cooling off in the water.
Uma also got close with Andre as they drank wine with a group of friends. In this shot, she's even nibbling on his ear. Talk about PDA!
Uma and Andre dated for three years after her split from ex-husband Ethan Hawke in 2005.
Flashback to see Uma and Quentin's discuss their cult classic Pulp Fiction
in the video below.