Love is just not on Nina Dobrev and Derek Hough's side. After six weeks of dating, the Dancing with the Stars vet and The Vampire Diaries actress have called it quits. A source tells Us Weekly that the relationship had "played itself out.” With Hough filming in L.A. and Dobrev in Atlanta, distance played a role in the breakup. “The distance was too much to handle," a friend says of the couple. Luckily, Dobrev and best friend Julianne Hough continue to be friends. "Julianne understands -- there are no hard feelings," another source told the magazine.