Missing, one stunningly attractive teenage boy. Answers to 'Jace' or 'Hot Stuff

Well, I'd certainly hate to interrupt your pleasant night stroll with my sudden death."
He blinked. "There is a fine line between sarcasm and outright hostility, and you seem to have crossed it. What's up?

You're just worried they'll hire a male instructor and he'll be hotter than you."
Jace's eyebrows went up. "Hotter than me?"
"It could happen," Clary said, "You know, theoretically."
"Theoretically the planet could suddenly crack in half, leaving me on one side and you on the other, forever and tragically parted, but I'm not worried about that either. Some things," Jace said, with his customary crooked smile, "are just too unlikely to dwell upon.

I suppose you've always been amazing at this stuff."- Clary
"I was born amazing." - Jace

Isabelle drifted over, Jace a pace behind her. She was wearing a long black dress with boots and an even longer cutaway coat of soft green velvet, the color of moss. "I can't believe you did it!" she exclaimed. "How did you get Magnus to let Jace leave?"
"Traded him for Alec," Clary said.
Isabelle looked mildly alarmed. "Not permanently?"
"No," said Jace. "Just for a few hours. Unless I don't come back," he added thoughtfully. "In which case, maybe he does get to keep Alec. Think of it as a lease with an option to buy."
Isabelle looked dubious. "Mom and Dad won't be pleased if they find out."
"That you freed a possible criminal by trading away your brother to a warlock who looks like a gay Sonic the Hedgehog and dresses like the Child Catcher from Chitty Chitty Bang Bang?" Simon inquired. "No, probably not.

Aren’t they supposed to be hiring someone else to train me full-time anyway?”
“Yes,” he said, getting up and pulling her to her feet along with him,“ and I’m worried that if you get into the habit of making out with your instructors, you’ll wind up making out with him, too.”
“ Don’t be sexist. They could find me a female instructor.”
“In that case you have my permission to make out with her, as long as I can watch.