As LeAnn Rimes turns 27 today, look back at other stars who have come between couples
Abbie Cornish and Ryan Phillippe
The Australian actress met Reese Witherspoon's husband on the set of their movie Stop-Loss. They reportedly started a romantic relationship, and the infidelity rumors helped end his seven-year marriage to the Legally Blonde star in 2006. "I had difficulties ... in my marriage long before I met her," said Phillippe, who added that he and Cornish were just "close friends" before they appeared together publicly a year later.