Quote from : City of Glass Book

But that's not what you said when she walked into the room," said Simon quietly. "You said, 'Why didn't you ever tell me I had a brother?'" "I know." Clary yanked a blade of grass out of the dirt, worrying it between her fingers. "I guess I can't help thinking that if I'd known the truth, I wouldn't have met Jace the way I did. I wouldn't have fallen in love with him." Simon was silent for a moment. "I don't think I've ever heard you say that before." "That I love him?" She laughed, but it sounded dreary even to her ears. "Seems useless to pretend like I don't, at this point. Maybe it doesn't matter. I probably won't ever see him again, anyway." "He'll come back." "Maybe." "He'll come back," Simon said again. "For you.