Help! I'm falling for a teacher...?

[Rebecca]

I'm 13 years old and a lesbian, and I think that my history teacher is the most beautiful woman in the world. Every time she looks at me I get this feeling like it's "the look" when I know deep down that it can't be. She has never said anything related to her sexual orientation and that just makes me more hopeful that it could be, when I know it can't. She's twelve years older than me (Internet stalking attempts but she doesn't do social media) and all of my classmates think she's mean and ugly, but I don't! This has been happening for four months. What do I do?