What is the main conflict in Becoming a Man: Half a Life Story by Paul Monette?

Paul Monette tells the story of his life: growing up gay in a world where he felt gay was seen as just not right. He grows up in Andover, Massachusetts, a primarily Catholic upper-middle class town. His loving parents soon add a younger brother to the family. After witnessing vicious bullies call a quiet nerdy classmate "homo," Paul learns that he must hide his homosexuality at all costs.