Dean Sheremet filed for divorce from LeAnn Rimes in December. The couple -- who was married for nearly eight years -- separated in September after reports surfaced that the country singer was having an affair with her "Northern Lights" co-star, Eddie Cibrian. Rick Diamond/WireImage.com - April 14, 2008
Celebrity Breakups of '09
From Jon and Kate to John and Jen, check out this list of 2009's biggest breakups.