You knew it's never just you when you're alone... everywhere in the darkness he's with you. Who is "He"? You didn't know. The darkness itself probably. He never talked to you. He never scared you... he's just here. You were never scared of the darkness... it was a collaboration of all your memories. The ones that made you happy and that made you feel terrible. After a long day of work you were dissolving into the darkness and it made you feel better.