I need some advice.

Hello guys. I'm a student in high school. This year I met a wonder teacher, my history teacher, and I have always connected with him, but i'm starting to develop actual feelings for him. The only issue is, I'm straight... I've never thought a guy was cute or had a crush on a guy, only girls... However I find my teacher to be hot and charming... I'm not sure what's going on with me or what.. I'm always sleepy and I don't pay attention in any of my other classes -- but his, I could never be more awake and ready to hear anything he says. Thank you in advance for replying, and this is a throwaway account for obvious reasons