(He looks at Elena and Damon)
Katherine: Now you know how I feel. Damon: No, those got old
(He stabs Mason with the silver knife but Mason removes the knife from his chest)
Mason: You know, I think it was werewolves who started this whole silver myth. It doesn't mean that you're safe
Elena: I'm not afraid of her
Stefan: Well, you should be
Elena: If Katherine had her way, we'll be breaking up right now
Stefan: If today taught me anything, is that Katherine is used to getting her way
Elena: You're not actually saying that we should what she says? Katherine is waiting for him)
Katherine: Bad day? Puppy with a tutu! Stefan: And... how do you know this? To new friends
(Caroline and Elena are in the living room)
Elena: Would I be the worst friend in the world if i abandon you and went to Stefan's? We will be together again, I promise
(She kisses him)
Nowadays
(Katherine touches her lips and smiles)
Plan: A: Stefan; Q: Who did Katherine kiss in 1864? A: Elena; Q: Who does Katherine threaten to kill if Stefan doesn't end his relationship with her? A: Caroline; Q: Who does Elena realize is working for Katherine? A: Elena's questions; Q: What does Katherine ignore when they meet? A: Damon; Q: Who stabs Mason with a silver knife? A: werewolves; Q: What does Mason say silver doesn't hurt? A: enemies; Q: What are Elena and Katherine now? A: her love; Q: What did Katherine declare to Stefan after he saved her? Summary: Katherine tells Stefan that she will kill Elena unless he ends his relationship with her, and as a result, Elena realizes that Caroline is working for Katherine. Elena and Katherine finally meet, but Katherine ignores Elena's questions. Damon stabs Mason with a silver knife, but Mason says it is only a myth that silver hurts werewolves. They are now enemies. Katherine remembers how in 1864, after Stefan and Damon were shot in an attempt to save her, she had kissed Stefan, declaring her love and saying they would be together again one day. Stefan and Elena stage a fake break-up to prevent Katherine from hurting anybody.