See which A-list twosomes sparked a romance as cameras rolled
Sienna Miller and Jude Law
Costarring in 2004's Alfie, Law and Miller were once engaged before Law's affair with his children's nanny came to light. "I'm really not happy talking about our relationship," Miller told London's Evening Standard at the time they were filming. "It all seems so mad at the moment."
Credit: Kevin Mazur/WireImage.com