What are Hugo's motives; why does he manipulate the other characters?

Hugo is portrayed as very selfish and jealous. Throughout the story it is shown that Hugo is unhappy about the relationship between O and his Father. Because of this, he has a motive to destroy Hugo’s life, and furthermore, the relationship between O and his father. He manipulates the other characters because each of them has a important relationship with O. Desi was his girlfriend, Mike was his best friend, and O’s father was his coach.  All these people had a very strong influence over O, and by destroying these relationships one by one; Hugo was able to destroy O’s life.