what did levi used to feel for boaz?

Levi has mixed feelings about his brother returning home. He is nearly humiliated when the principal of his school holds an assembly to announce that war hero Boaz Katznelson is returning home. It seems that everyone loved Boaz even those who barely knew him. Boaz is a very cool guy. He was good looking, tall, smart and charming. Levi has always looked up to his big brother and wants to be just like him. In reality, Levi feels inferior to Boaz and fears he could never be like him.