Everyone expected that Jude Law and Sienna Miller would soon be announcing their marriage - not a split. After all, despite their ups and downs, encompassing everything from infidelity and the child Jude fathered during one of their breaks, the glamorous pair always found their way back to each other. And Sienna isn't the only romantic unable to stay away from an ex. Pink, Chelsy Davy and Amy Winehouse are among those who failed to resist the allure of lovers everyone thought they'd left behind. CLICK ON PHOTOS FOR GALLERY
