“You on your way out?"Jace nodded. "Dont want to overstay our welcome.""What welcome?" Magnus asked. "I'd say is was a pleasure to meet you, but it wasn't. Not that you aren't all fairly charming, and as for you-" He dropped a glittery wink at Alec, who looked astounded. "Call me?"-Magnus & Jace, pg.243-”
“Magnus wants to shout at me, don’t you, Magnus?” (Jace)“Yes,” Magnus said, tearing his eyes away from Alec long enough to scowl.-pg.275-”
“I think its more important for you to go than me. You‘re Valentine’s son, I‘m sure you‘re the one the Queen really wants to see. Besides, you‘re charming.”Jace glared at him.“Maybe not at the moment,” Alec amended. “But you‘re usually charming. And faeries are very susceptible to charm.”“Plus, if you stay here, I‘ve got the whole first season of Gilligan’s Island on DVD,” Magnus said.“No one could turn that down,” said Jace.-Alec, Magnus, & Jace, pg.148 & 149-”
“Did you think I was helping you out of the goodness of my heart? Or am I just the only warlock you know?” (Magnus)…“No,” he said now, “but you are the only warlock we know who happens to be dating a friend of ours.” (Jace)For a moment everyone stared at him-Alec in sheer horror, Magnus un astonished anger, and Clary and Simon in surprise. It was Alec who spoke first, his voice shaking. “Why would you say something like that?”Jace looked baffled. “Something like what?”“That I‘m dating-that we‘re-its not true,” Alec said, his voice rising and dropping several octaves as he fought to control it.Jace looked at him steadily. “I didn’t say he was dating you,” he said, “but funny that you knew just what I meant, isn’t it?”“We‘re not dating,” Alec said again.“Oh?” Magnus said. “So you‘re just that friendly with everybody, is that it?”-pg.241-”
“Hey," said Jace. who was sitting on an overturned speaker, looking at his cellphone, "do you want to see a photo of Alec and Magnus in Berlin?""Not really," said Simon. "Magnus is wearing lederhosen.""And yet, still no.”
“Magnus looked at her meditatively. 'I think,' he said, 'there isn't much that Jace wouldn't do for you, if you asked him.'Clary opened her mouth and then shut it again. She thought of the way Magnus had always seemed to know how Alec felt about Jace, how Simon felt about her. Her feelings for Jace must be written on her face even now, and Magnus was an expert reader. She glanced away.”