It was obvious that Locket Tom was his lustful desires, once he had figured this out it was easier to understand his attraction to that part of the soul, it was seductive and alluring. The diary was childlike happiness and hope, it made Harrys heart ache at the thought that Tom felt the need to rid himself of hope and happiness, Diary Tom was quickly becoming his close friend, he seemed to understand most things and had a genuine smile, it blew him away every time. 