I feel no emotion, please help me?

This started about a year ago, and I thought it was a phase that would just pass. I used to have a silly teenage crush on Darren Criss, but now I don't like him but just love his music. I feel no emotion and the only thing that I feel is worth living for is Darren Criss' music. It sounds so ridiculous, but it is true. At school, all my friends are laughing and I have to fake a smile. Sometimes I think about what is worth living for, and I just remember that later, I can listen to Darren Criss and it will all be ok. Please help I don't know what to do.