Alec Lightwood: Why didn't you tell me?
Izzy Lightwood: Because... I didn't want you to look at me the way you're looking at me now.
Alec Lightwood: Like what?
Izzy Lightwood: Like I'm weak.
Alec Lightwood: I wish I was half as strong as you on your weakest day. What? You can beat anyone or anything.
Izzy Lightwood: Except for this. It's always gonna be there, like a shadow, just waiting for me to let my guard down.
Alec Lightwood: I did some reading about those mundane groups you go to. This isn't your fight, it's ours. No one does this alone. Izzy, look, I know you've heard all that before. Just... Please be honest with the people who care about you. Whether it's vampire venom or uncovering Clave conspiracies... I'm here with you, every step of the way.