Jude Law and Sienna Miller

After an on-again and off-again relationship, Jude Law and girlfriend Sienna Miller at last call it quit.

A source close to the pair tells People exclusively that Law and Miller have split for good. "It's a mutual decision," the source said. "They have definitely come to the end of the road. They tried to make it work but it failed."

Law,33, and Miller,24, once engaged in 2004. Sad to say that the actress later on broke off the engagement after his affair with his children's nanny, Daisy Wright, was exposed the following year.