Is it normal to be this infatuated with a teacher?

I have this major infatuation with a teacher (I'm a guy by the way), she's young, in her twenties, and not only is she beautiful, but she's really nice, and she's a good teacherI've suddenly fallen madly in love and I can't stop thinking about her no matter what I do. Seriously she's in my head every other second. How do I get over this?It really sucks since I keep getting the impression she hates me, even though there's no proof of that, I walk by her room just to get a glimpse of her, I feel nervous and jittery whenever she's around and I feel sad, mopey, and depressed all the time since I know nothing will ever happen. Is this a normal thing to be going through? Any helpful tips on getting over this?