nothing says 'I love you' like reducing yourself to a smoldering pile of ashes

I learned to play the instruments of war," he said, "and paint in blood.

One must always be careful of books.

And you won’t leave me?” “No.” Alec said. “No, we won’t ever leave you. You know that.” “Never.” Isabelle took his hand, the one Alec wasn’t holding, and pressed it fiercely. “Lightwoods, all together.” She whispered. Jace's hand was suddenly damp where she was holding it, and he realized she was crying, her tears splashing down crying for him, because she loved him; even after everything that had happened, she still loved him. They both did. He fell asleep like that, with Isabelle on one side of him and Alec on the other, as the sun came up with the dawn.

If you insist on the chase then you'd better start running 'cause dude, you're in for a marathon

Will," she said softly, sleepily. "Last night--" You were kind to me, she was going to say. Thank you. The glare from his blue eyes stabbed through her. "There was no last night," he said through his teeth. At that, she sat up straight, almost awake. "Oh, truly? We just went right from one afternoon on through till the next morning? How odd no one else remarked on it. I should think it some miracle, a day with no night--

That does it," said Jace. "I'm going to get you a dictionary for Christmas this year." "Why?" Isabelle said. "So you can look up 'fun.' I'm not sure you know what it means.