Clockwork Prince (The Infernal Devices, #2)

by Cassandra Clare

I know what she means to you.” Jem grinned. His happiness was printed all over his face, his eyes, Will thought; he had never seen him look like this. He had always thought of Jem as a calm and peaceful presence, always thought that joy, like anger, was too extreme and human an emotion for him. He realized now that he had been quite wrong; Jem had simply not been happy like this before. Not since his parents had died, Will imagined. But Will had never considered it. He had dwelled on whether Jem was safe, whether he was surviving, but not if he was happy. Jem is my great sin. Tessa had been right, he thought. He had wanted her to break things off with Jem, whatever the cost; now he realized he did not, could not. You might at least believe I know honor—honor, and debt, he had said to Jem, and he had meant it. He owed Jem his life. He could not take from him the one thing Jem wanted more than anything else. Even if it meant Will’s own happiness, for Jem was not only someone to whom he owed a debt that could never be repaid, but, as the covenant said, someone he loved as he loved his own soul.