how is charlie and bills relationship

Bill is Charlie's teacher for advanced English. From the beginning of the novel, Bill mentors Charlie. He notices Charlie's enthusiasm and dedication to writing and literature, and he seeks to foster the young man's talents. As a result, Bill begins assigning Charlie extra texts, as well as additional papers. Bill challenges Charlie by marking his extra papers with Cs and Bs and urges him to improve, but he gives him A marks on his official report cards. As the relationship grows and the two characters talk about the texts outside of class, Charlie begins to tell Bill more about his own life. Charlie values Bill because Bill doesn't try to see everything based merely on his own experiences or attempt to tell Charlie what to do; instead, he offers thoughtful advice that Charlie is able to reflect upon at will. Bill's most famous line in the novel, "We accept the love we think we deserve," is just one of many sound pieces of advice that he gives to Charlie.