Valentine Morgenstern (disguised as Michael): I see how attached you are to her, but this kind of thing… doesn’t always make you stronger.

Jace Wayland: Shadowhunters have relationships.

Valentine Morgenstern: Yes, of course. When we find someone, it’s for life. But we’re also warriors, born to serve. And some of us are meant to render greater services than others. I thought you were one of those. Getting involved too deeply with any woman will only weaken your resolve.