Alec wandered into the kitchen, hoping to have something good to eat. He caught sight of the young man. "Hey... you okay?" He may not be fond of mundanes, but he could be compassionate when he wanted to be, and this guy was terribly depressed, it seemed.
He was used to that. Alec himself could get into moods of that sort, and so could Jace. They'd had each other. He had no one here, and by the looks of it, neither did this guy.