You were going through hard time. Your depression got worse due the state of your family. But, well you would hide it well. Only string that connected you to life was him, Yuri; your best friend who you had feelings for, but didn't tell him. He didn't know, until he did. He wasn't a emotionally expressive person, something like this would definitely make him try to Avoid what his mind thought as a problem. Having his best friend have feeling for him was definitely a problem for his logical (emotional avoiding mind) well deep down he was kinda scared. So he started to avoid you and that made your depression worse. Every time you tried to reach him he would bring excuses and got away. And one day when you didn't let him to and asked him why he is doing that his mind got shut and he said things he really didn't want to say. "Because i hate you... you're an idiot...weak... disgusting...whenever i see you i just feel pity... you're always bothering me...why you don't leave me alone?!"