Killian

“No. That's Clary; shes's my best friend." Simon pocketed his phone. "And she has a boyfriend. Like, really, really, really has a boyfriend. The nuclear bomb of boyfriends. Trust me on this one.”
― Cassandra Clare, City of Fallen Angels

“But I watch my brothers give their hearts away and I think, Don’t you know better? Hearts are breakable. And I think even when you heal, you’re never what you were before.”
― Cassandra Clare, City of Fallen Angels

“You're the first Shadowhunter I've ever met."
“That’s too bad,” said Jace, “since all the others you meet from now on will be a terrible letdown.”
― Cassandra Clare, City of Fallen Angels

“Jace perched on the windowsill and looked down at him. "You really don't get this bodyguard thing, do you?"

"I didn't even think you liked me all that much," said Simon. "Is this one of those keep-your-friends-close-and-your-enemies-closer things?"

"I thought it was keep your friends close so you have someone to drive the car when you sneak over to your enemy's house a night and throw up in his mailbox."

"I'm pretty sure that's not it”
― Cassandra Clare, City of Fallen Angels