Hopeless.. Hurting.. I need some help..?

I have experienced this same situation with minor differences. My parents are divorced and I'm always home alone so it was hard to want to do anything. I also don't have a ton of friends and school was stressful with advanced courses and sports. The way I got over things was trying to feel good about myself again. I tried to get in better shape, do better in school, and be closer to the friends I had. Slowly, I stopped feeling as depressed. You said that you want to study art and music, start doing hobbies that you enjoy and relate to your future. I know, this probably sucks to hear, but you need to make your new future, without this person.