According to the website Femalefirst, rumours are circulating that Willis, 51, has fallen in love with Zellweger. The two were recently spotted together at the Los Angeles restaurant Cosy.
A source said, "They seemed really into each other. Renée definitely left with Bruce." Other witnesses say that the two stars were also seated with actress Reese Witherspoon.
Witherspoon was alone with her salad when the Bridget Jones star decided to go to her table to give her some company. Witherspoon recently announced her separation from her husband, actor Ryan Phillipe.
The two women were soon joined by the star of the film Unbreakable. The trio spent nearly an hour together. Zellweger, 37, also mentioned recently that her life was easier before she became a celebrity.