How do I deal without him?

Kashawna • I`m a junior in high school who`s love to draw.
Well my best friend has finally moved with his life with out me. I really do miss him but I couldn't deal with his changes. Now I actually believe my brother when he said " People will find things bigger and better than you." I cried for weeks because it really hurts inside. So now every day I'm gonna have to face him in school. Just hearing his voice makes me want to cry. I'm never gonna get the person who i cared for so much.