MEREDITH: It’s the chase, isn’t it?
DEREK: What?
MEREDITH: The thrill of the chase. I’ve been wondering to myself, “Why are you so hell-bent on getting me to go out with you?” You know you’re my boss, you know it’s against the rules, you know I keep saying no. It’s the chase.
DEREK: Well, it’s fun, isn’t it?
MEREDITH: You see? This is a game to you. But not to me. Because, unlike you, I still have something to prove.

DEREK: It’s not the chase.
MEREDITH: What?
DEREK: You and me. It is not the thrill of the chase. It’s not a game. It’s… It’s your tiny, ineffectual fists. And your hair.
MEREDITH: My hair?
DEREK: It smells good. And you’re very, very bossy. Keeps me in line.
MEREDITH: I’m still not going out with you.
DEREK: You say that now.

1x03 Winning a Battle Losing the War