Really? Are you going to ask him to be your partner?" Isabelle asked. "It's like cotillion, this partners business, except with killing."
"So, exactly like a cotillion," said Simon.

Valentine whirled. Clary, lying half-conscious in the sand, her wrists and arms a screaming agony, stared
defiantly back. For a moment their eyes met—and he looked at her, really looked at her, and she
realized it was the first time her father had ever looked her in the face and seen her. The first and only
time.
“Clarissa,” he said. “What have you done?”
Clary stretched out her hand, and with her finger she wrote in the sand at his feet. She didn’t draw runes.
She drew words: the words he had said to her the first time he’d seen what she could do, when she’d
drawn the rune that had destroyed his ship.
MENE MENE TEKEL UPSHARIN.

She threw the door open. The room seemed to be a sort of library, the walls lined with books. It was brightly lit, light streaming through a tall picture window. In the middle of the room stood Jace. He wasn't alone, though-not by a long shot. There was a dark-haired girl with him, a girl Clary had never seen before, and the two of them were locked together in a passionate embrace

And quit baring your fangs at me. It's making me nervous."

"Good," Simon said. "if you want to know why, it's because you smell like blood."
"It's my cologne. Eau de Recent Injury." Jace raised his left hand.

I am a man, and men do not drink pink drinks. Now, be gone, woman, and fetch me something brown." Jace said.
"Brown?" said Isabelle.
"Yes. Brown. It's a manly color. See? Alec is wearing it." Jace said.
"Well, it was black but it faded." Alec said.
"Well, I can always fix it up with something sparkly," Magnus said, holding a sparkley headband.
"Resist the urge, Alec, resist the urge." Simon said.

Is this the part where you say if I hurt her, you'll kill me?"
"No" Simon said, "If you hurt Clary she's quite capable of killing you herself. Possibly with a variety of weapons.