Jude and Sienna make their seasonal love life alterations and the gossip world asks, "Whats that got to do with Brit and KFed?"

Jude Law and Sienna Miller have finally split for good, a source close to the pair tells PEOPLE exclusively.

"It's a mutual decision," a pal of the actor says of ending the roller-coaster romance. "They have definitely come to the end of the road. They tried to make it work but it failed."

Reps for both Miller and Law refused to comment on the private lives of their clients.

Law, 33, and Miller, 24, were engaged to be married in 2004 but Miller broke off the relationship after his affair with his children's nanny, Daisy Wright, was exposed the following year.

Source