Smallville, Season 3

Lex:
I told you to let it go, but you kept pursuing it. You even involved my father.

Clark:
Yeah, well, believe me, Lex. He's the last person I'd ask for help, but I didn't have any other options.

Lex:
He betrayed you, Clark. He stopped my sessions with Garner by offering you up as a lab rat. I've tried to keep my father away from you, but he's obsessed. If I'd got back those seven weeks, I could've finally stopped him.

Clark:
Maybe, Lex. Or maybe you'd make it worse. You're always telling me how you don't want to turn into your father, and I truly believe that. But the more you two go at each other, the more like him you become. And the more people get hurt.

Lex:
I will never become my father. I would never sacrifice you or anybody I cared about to bring him down.

Clark:
Lex.... why does your father hate you so much?