I think most of us had crush on our teachers before but most of us did not take any action. For those who did, 95% the teachers will reject and those 5 % who did start something with their teachers, think usually the teachers are the one who stop the relationship so very unusual for the story in the MV to happen.
You probably do not have teachers who are only a few years old than you and very attractive :-) Usually high school,college teachers,relief teachers are even closer to your age.