Even though Nic clearly does not want to be reached, David can’t help but continue to try and grasp the situation in whatever way he can. He tries desperately to find out where Nic is, but in doing so, he only fuels his panic even further. This hints at David’s later realization that when Nic is relapsing, David needs to let go to a degree so that he can live his own life, and not be constantly filled with anxiety.