News ). The couple, who called it quits in 2013, continued to work together until Dobrev left the series after Season 6. (Dobrev later returned for the series finale). When asked about the pair's split during an interview with the "Not Skinny But Not Fat" podcast, Holt had only good things to say about her former costars. Nina Dobrev and Ian Somerhalder's relationship spanned three years, according to Who's Dated Who. The former couple fell in love while working together as part of The Vampire Diaries cast. Fans of the show couldn't help but love these two, who turned their friendship into one of the most talked about romances ever. Nina Dobrev has split with her "Vampire Diaries" costar Ian Somerhalder. It's too bad that whole "sire bond" thing doesn't work in real life. Many fans were left heartbroken when Nina Dobrev and Ian Somerhalder, better known to "The Vampire Diaries" fans as Elena and Damon, decided to end their romance in 2013. But for Nina Dobrev and Ian Somerhalder, it was the opposite. Life & Style can exclusively reveal that the main reason for their breakup is that Ian wanted to get married and she just wasn't ready. WivY.