Uma Thurman and Arpad Busson: It's Over!

Lots of money can't buy Uma Thurman happiness.

Sources confirm that the actress called off her engagement to multimillionaire Arpad Busson two months ago, but they "are friends" insiders say.

The couple announced plans to marry last June after Busson gave Thurman an eight-carat diamond ring. But she apparently thought better of going through with a third, failed marriage.

Uma already has two divorces on her record, as she was previously wed to Ethan Hawke and Gary Oldman.