Teenagers are such assholes. The sad thing is, a lot of them won't grow out of it. I didn't have many friends growing up, and tbh, I still don't. I learned to deal with the loneliness and get comfortable with myself. Once I did, I've found people who are life-long, very close friends. Losing a friend is never easy, but if they're shallow enough to ditch you over something as simple as a goddamn TV show, that's not someone you want in your life. Focus on something else. Learn a new skill, start a new project, seek out new friends. Don't dwell on it or you'll only feel worse. That's just my opinion. I'm independent and headstrong, so maybe I'm completely talking out my ass.