"What do you think it would have been like if Valentine had brought you up along with me? Would you have loved me?" Clary was very glad she had put her cup down, because if she hadn't, she would have dropped it. Sebastian was looking at her not with any shyness or the sort of natural awkwardness that might be attendant on such a bizarre question, but as if she were a curious, foreign life-form. "Well," she said. "You're my brother. I would have loved you. I would have...had to."