Without him, [Nate] she was completely alone in the world. There was no one at all for her. No one in the world who cared whether she lived or died. Sometimes the horror of that thought threatened to overwhelm her and plunge her down into bottomless darkness.

They say time heals all wounds, but that presumes the source of the grief is finite

Right. Vampires. But how do they get inside?" "They fly" ... "We dont fly," Clary felt impelled to point out. "No," Jace agreed. "We dont fly. We break and enter." ... "Flying sounds like more fun." -Clary & Jace, pg.258-

As long as there was coffee in the world, how bad could things be?

It was Eric's voice not Simon's, on the recorded message. “Ladies, ladies ” he said. Though it was the millionth time she’d heard the recording, Clary couldn't help rolling her eyes. “If you've reached this message that means our boy Simon is out partying. But please don’t fight among yourselves. There’s always enough Simon to go around.” There was a muffled yell, some laughter, and then the long sound of the beep.

If you’re being punished,” Clary said, “then so am I. Because all those things you felt, I felt them too, but we can’t—we have to stop feeling this way, because it’s our only chance.” Jace’s hands were tight at his sides. “Our only chance for what?” “To be together at all. Because otherwise we can’t ever be around each other, not even just in the same room, and I can’t stand that. I’d rather have you in my life even as a brother than not at all

Dear Alec, As your best friend and parabatai, I am offended not to have been asked to be your best man at the wedding. Et tu, Brutus. -Jace Alec , he really is upset. He hasn't washed his hair in three days. -Clary