She'll try to break us, and how we respond to that will define us.

Stefan [to Damon]

Katherine: I came back for you.
Stefan: The problem, Katherine, is that I hate you.
Katherine: That sounds like the beginning of a love story. Not the end of one.

Stefan: I haven't spent 145 years obsessed with you.
Katherine: Based on your choice of women, I'd say otherwise.

You think Katherine is gonna send me off the deep end, don't you? I don't need her for that.

Damon

Stefan: How can I play if I don't know the rules?
Katherine: No rules, Stefan. Don't you remember? No rules.

Bonnie: When we're alone, I'm gonna take you out.
Damon: You need to stop with the witch's brew. You're starting to believe your own press.

Mason: In my mind, you're 12 years old.
Tyler: That's two years older than the last time you saw me.

Elena: What happened?
Damon: Katherine happened.

Jeremy: I don't need a babysitter.
Elena: Yes, you do.

She's Katherine. She loves to play games.

Damon

He kissed Katherine, not me. I wouldn't do that.

Elena [to Stefan]

Katherine wants you dead, there's zero you can do about it. You will be dead.

Damon

The Vampire Diaries Season 2 Quotes

Damon: My new girlfriend. Andie Starr. Action News.
Alaric: It's not called Action News.
Damon: I know. I like just saying it.

Well, I'm naked. So... I'm gonna go.

Alaric