We both wanna protect the people we care about. This difference is, for you, Damon is one of them. You saw what I was able to do tonight. I know who I am now. And if Damon spills so much as one drop of innocent blood, I`ll take him down — even if I have to take you with him.
You know, I came to 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.
You know I first met Isobel when I was a teenager. I fell in love with her instantly, although I`m pretty sure she never loved me. She was special. Part of why I hate vampires so much is because of what she became. How it ruined her. And I never would've sent her to Damon had I known she wanted to turn. It`s my fault. I`m telling you this because I hope maybe you'd understand.
At least I fooled one of you. [Stefan zips over and smashes her up against the wall with a growl] Feel better?
[Stefan throws her up against another wall by the throat. The click of keys in the door distracts him, and Katherine breaks his arm and zips out of the house. Elena and Damon come into the house.]