Clary Fairchild: Isabelle, can I ask you something?
Izzy Lightwood: Sure.
Clary Fairchild: Is Alec gay?
Izzy Lightwood: How did you guess?
Clary Fairchild: I...
Izzy Lightwood: You absolutely can't tell anyone.
Clary Fairchild: Not even Jace?
Izzy Lightwood: Especially not Jace!
Clary Fairchild: All right. I guess I didn't realize it was such a big deal.
Izzy Lightwood: It would be to my parents. They would disown him and throw him out of the Clave...
Clary Fairchild: What, you can't be gay and a Shadowhunter?
Izzy Lightwood: There's no official rule about it. But people don't like it. I mean, less with people our age—I think... But the older generation, no. If it happens, you don't talk about it.