Not long after Nina Dobrev and Ian Somerhalder sunk their teeth into roles on "Vampire Diaries" (she's Elena Gilbert; he's Damon Salvatore), rumors started that they were more than just co-workers.Not long after Nina Dobrev and Ian Somerhalder sunk their teeth into roles on "Vampire Diaries" (she's Elena Gilbert; he's Damon Salvatore), rumors started that they were more than just co-workers.