Is it normal to wanna have sex with my teacher?

For the first time I saw him I knew his was the man for me he is not so old he is around my age and he teaches me in my university. When we are alone for my feedback on the course I feel the occureness in the room but nothing happens despite that I have a bf so does he . But when he see me in the eyes I just
Know I want him and I feel he wants me to is that crazy or not!? I am so confused