I'm a hormonal mess, please help :)

Recently noticed my increase in sex drive, and it's driving me insane. I'm kind of disappointed, actually. There is a guy who I have a crush on at school, he liked me for a little bit, And then told me that he was not ready for a relationship. That's okay, I understand, and it's totally normal... but after that happened, I began to obsess over him. The thing is, I don't think that he's that attractive, nor do I think that he is that great of a person, or even my type, but I think that I'm romanticizing romance more than a romance deserves to be romanticized. I just can't stop thinking about him.