Pretty Little Liars, Season 1

[Ezra sees Aria, whom he'd met the day before and thought was a college student, sitting in his high school English class.]

Ezra:
Holy crap!

[Later]

Ezra:
You told me you went to Hollis.

Aria:
No, I said I was thinking about majoring in English, and that's true.

Ezra:
Look, I think you're amazing, Aria. When I first met you, I thought, "Who is this girl?"

Aria:
I'm still that girl. Nothing's changed.

Ezra:
Yes. Yes, it has. I'm your teacher...It's not right. We just can't.