Katherine: What are you doing here?
Damon: A failed and feeble attempt at doing the right thing.
Katherine: Which was…
Damon: It's not important. I'll take this from you.
Katherine: Thank you.
Damon: You know, I came in this town wanting to destroy it. Tonight I… Found myself wanting to protect it. How does that happen? I'm not a hero, Elena. I don't do good. It's not in me.
Katherine: Maybe it is.
Damon: No. No, it's reserved for my brother and you, and Bonnie. Even though she has every reason to te me, still helped Stefan save me.
Katherine: Why do you sou so surprised?
Damon: Because she did it for you. Which means that somewhere along the way, you decided that I was worth saving. And I wanted to… Thank you for that.
Katherine: You're welcome.