Alec Lightwood: You would do anything to break Clary's connection with Jonathan, right?

Jace Herondale: Yeah. Yeah, of course.

Alec Lightwood: So, hypothetically, what if you could? But, as a consequence, you could never see her again?

Jace Herondale: That's a little dark.

Alec Lightwood: Just humor me. Would you do it?

Jace Herondale: Now that I've lost her once, I don't think I could ever go through that again. It's selfish, I know. But...

Alec Lightwood: No. I get it.