Seriously, I could listen to Matt Daddario talk for hours. No wonder that one of the adjectives Harry Shum Jr. used to describe Matt was intelligent. The answer he gave to the question about Alec's feelings for Jace, was so well thought out, precise, with no uhm-ing or ahm-ing. You can see that he really thought about it, that he understands his character very well.
And here we have Harry Shum Jr. talking about Magnus' feelings for Alec, what fascinates Magnus about Alec. Based on this, Malec will be utterly wonderful!
And it's actually amazing how well these actors know their characters. It's one of the reasons why I have so much faith in this show, because the writers apparently really understand what the story should be about. Yes, there will be changes from the books, but the writers really GOT the essence of it, who these characters are. And I can take lame action and bad CGI or whatever the flavor of general complaints is today, as long as I get great character moments. And this show will be chock full of them!