Cora: I need to talk to you and not as your friend.
Stiles: *excited* We're friends?
Cora: Yes, but if you tell anyone, I will deny it.
Stiles: Okay. Will we still be friends after this conversation?
Cora: Yes, but I'm starting to reconsider my options. Regardless, what I have to say now, I say as Derek's sister, not as your friend.
Stiles: Okay...
Cora: You two are getting married, and I'm happy for both of you, but if you ever hurt my brother, if you ever break his heart or make him cry, I will hunt you down and kill you, got it?
Stiles: Got it.
Cora: Okay.
Stiles: Are you back to talking to me as a friend again?
Cora: Yeah.
Stiles: Dude, you won't believe what Derek's sister just said to me!