Rachel Weisz and Daniel Craig fell in love on set of Dream House, but they kept their PDA under wraps!
Their 15-year-old costar Rachel Fox told Us Weekly on Friday at Teen VOGUE's Young Hollywood Party in NYC that she had no idea the duo (now newlyweds!) were romantically involved during filming.
"They play husband and wife, so anytime that the camera was rolling you felt that spark," Fox told Us. "I didn't notice off screen that anything was going on. They did a good job of keeping it secret!"
So did the teen know her costars were an item before filming wrapped? "It was only afterwards," she said. "They did not tell anyone. They were so secretive. I had absolutely no idea until I heard it."
After nine years together, Weisz split with Black Swan director Darren Aronofsky in November 2010. The former couple share a five-year-old son, Henry. Just one month after their breakup, Weisz and Craig were spotted packing on the PDA during a romantic holiday weekend in the English countryside town of Somerset. After just six months of dating, they secretly wed in upstate New York in June.
The James Bond actor was previously married to actress Fiona Loudon from 1992 to 1994. The former spouses have one daughter together, Ella, 19. Craig and longtime girlfriend Satsuki Mitchell split in early 2010.
Dream House hits theaters Sept. 30.