CATEGORIES Celebrity Gossip

File this one under the "we kind of forgot they were still dating" category: Jude Law and Sienna Miller have ended their on-again, off-again relationship, according to PEOPLE magazine.

Law and Miller, who met on the set of 'Alfie,' got engaged on Christmas Day 2004; but after Law admitted to an affair with his nanny, Daisy Wright ("He is a great lover and knows how to satisfy a woman," she told the Daily Mirror), the pair broke off their engagement in 2006.

The couple reunited in the fall of 2009, shortly after Law fathered his fourth child, with model Samantha Burke. (Law has three children with ex-wife Sadie Frost. Keep up, people!) As proof of his newfound devotion and fidelity to Miller, Law bought her a grand piano with a sapphire-diamond ring inside.

Law and Miller are said to remain "good friends" despite their breakup; as a friend told PEOPLE, "It was an entirely an end-of-the relationship decision. It had run its course."

No word on who gets to retain custody of the grand piano.