“One can love two children. But your heart can be given romantic love to only a single other, said Woolsey.”

“I am glad,” he said. “They will be able to take care of each other when I am gone, or at least I can hope for it. He says she does not love him, but—surely she will come to love him in time. Will is easy to love, and he has given her his whole heart. I can see it. I hope she will not break it.”

“They say you cannot love two people equally at once,” she said. “And perhaps for others that is so. But you and Will—you are not like two ordinary people, two people who might have been jealous of each other, or who would have imagined my love for one of them diminished by my love of the other. You merged your souls when you were both children. I could not have loved Will so much if I had not loved you as well. And I could not love you as I do if I had not loved Will as I did.”

“You cannot save every fallen bird," said Woolsey."One will do," said Magnus.”

“The two are now bound inextricably. Should one die, the other will follow. No wepon in this world can wound only one of them”

“You do not want to help us,” Will said to Magnus. “You do not want to position yourself as an enemy of Mortmain’s.” “Well, can you blame him?” Woolsey rose in a whirl of yellow silk. “What could you possibly have to offer that would make the risk worth it to him?” “I will give you anything,” said Tessa in a low voice that Will felt in his bones. “Anything at all, if you can help us help Jem.” Magnus gripped a handful of his black hair. “God, the two of you. I can make inquiries. Track down some of the more unusual shipping routes. Old Molly —” “I’ve been to her,” Will said. “Something’s frightened her so badly she won’t even crawl out of her grave.” Woolsey snorted. “And that doesn’t tell you anything, little Shadowhunter? Is it really worth all this, just to stretch your friend’s life out another few months, another year? He will die anyway. And the sooner he dies, the sooner you can have his fiancée, the one you’re in love with.” He cut his amused gaze toward Tessa. “Really you ought to be counting down the days till he expires with great eagerness.”

“Love and lies can corrupt even the purest heart.”