When Adam first goes looking for him, he entertains the idea of maybe talking to Kavinsky, admitting his own guilt in all of this and that entire night was Adam lashing out because it was the only thing he knew how to do when his life was out of control and out of his own hands.

Then he sees Kavinsky doing lines, looking straight at Adam as if challenging him. For the briefest moment Adam's face flashes with hurt, embarrassment, and disappointment before he schools himself back into a mask of annoyed indifference. So much for that.

Rather than say anything to exacerbate the situation, he heads to Kavinsky's car after informing him of what's going on and waits there, willing himself not to look back at the other.