The British actress reunited with her former fiance last year (10), but they parted ways last month (Feb11) after less than a year back together. They previously called off their engagement in 2006 after Law's alleged affair with his children's nanny was exposed in the tabloids.
Miller has denied they became engaged for a second time after reviving their relationship, and revealed that although she did her best to make the union a success, it just "didn't work".
She tells Britain's The Guardian, "Apparently, we were engaged, which was totally untrue. We weren't. And I think this happens in everyone's lives: you get back together, you try and make it work, and it doesn't. It's not acrimonious, it had run its course."