You're his Friend and he put so many trust in you but you just lied to him and he got shocked when he knew that you're younger than him 4 years! He didn't hate you because you're too little but he just disappointed that he got lied and he put his trust in a wrong person even that you're so good at him,he used to have a crush on you And he's going to leave you and delete his own account to not seeing you anymore