Lord Alfred Douglas was a young aristocrat and poet. His cousin lent him a copy of The Picture of Dorian Gray and Bosie insisted on being introduced to the author after reading it. Bosie, who got that nickname because he was his mother's favorite child and called him Bosie (a derivative of "boysie") was infatuated with the book and told Wilde that he had read it fourteen times in a row. Soon after, they became lovers and where only parted when Wilde was arrested four years later. Wilde was even introduced to Bosie's mother, Lady Bracknell, and he made her a character in his most popular comedy, The Importance of Being Earnest. Ultimately, Bosie is said to have played a major involvement in the arrest of Wilde because of his erratic behavior and habits that influenced Oscar. 

Wilde was on trial three times, and Bosie testified for one of them, and then was out of the country for the other two. Bosie's father, John Sholto Douglas drove Wilde to take legal action after Douglas's behavior. After learning of their relationship, John Douglas would visit Wilde's home in fits of rage, attempted to disrupt a performance of Wilde's Importance of Being Earnest, and would leave cards for Wilde stating "for Oscar Wilde / posing Somdomite".https://www.branchcollective.org/?ps_articles=andrew-elfenbein-on-the-trials-of-oscar-wilde-myths-and-realities