Spoiler! Vampire Diaries' Phoebe Tonkin on How Long She'll Be on the Show (VIDEO) Tweet December 3, 2012 at 02:37PM EST by Wetpaint Entertainment Staff Related: The Vampire Diaries, Spoilers , Phoebe Tonkin , Hayley Credit: Sun Hearld We're so glad Phoebe Tonkin (Hayley) will back on Vampire Diaries next year.