I think he's jealous.

You could say anything you wanted to someone you thought you were never going to see again.

How could you be heartbroken and happy at the same time?

We need to talk. All of us About what we're going to do now." "I was going to watch Project Runway.

What's this?" he demanded, looking from Clary to his companions, as if they might know what she was doing there. "It's a girl," Jace said,recovering his composure. "Surely you've seen girls before, Alec. Your sister Isabelle is one.

The thing that you are too young to understand is that we all hide things. We hide them from our lovers because we wish to present our best selves, but also because if it is real love, we expect our loved one to simply understand it, without needing to ask. In a true partnership, the kind that lasts through the ages, there is an unspoken communion.

While the Clave disapproves of trespassers, oddly they take an even darker view of beheading and skinning people. They're peculiar that way.