The 39-year-old revealed the romantic scenes she shared with Hawke - with whom she has two children, Maya (11) and Levon (7) - in the 1997 movie are her all-time favourites because she had strong feelings for him, reports list.co.uk.
"The best kiss I ever had for a movie was with the guy I married, because I was really hot for him back then," she said.
Thurman, who is now engaged to millionaire businessman Arpad Busson, says she still loves Hawke, 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 said.