Hollywood star Uma Thurman says her best-ever screen kiss was with ex-husband Ethan Hawke in the 1997 movie 'Gattaca'.

The 39-year-old actress says the romantic scenes she shared with ex-hubby Hawke, with whom she has two children, Maya, 11, and Levon, seven, in 'Gattaca' are her all-time favourites because she had such strong feelings for him, Contactmusic reported.

"The best kiss I ever had for a movie was with the guy I married, because I was really hot for him back then," Thurman said.

The actress who was also previously married to actor Gary Oldman, is now engaged to millionaire businessman Arpad Busson but says she still loves Ethan, who she divorced in 2004.

"I love the man still, I really do. Hey, we have two kids together. That's very special. I'll always love him," she added.

Thurman recently said she has no immediate plans to walk down the aisle again.

"I'm happily engaged, but we haven't set a wedding up. I'm not in a rush to do anything. One day we'll do it, when we're ready," the actress added.