It's wrong to be obsessed with your teacher.
Fred greatly enjoys the lectures given by his English teacher.
Fred wants to get closer to his English teacher.
Fred asks his teacher if she would be willing to meet him and some like minded students for additional discussions.
Fred sends flowers and chocolates to his English teacher to express his feelings.
Fred is thrilled when he gets to have more detailed discussions with his teacher.
Fred is crushed when his teacher turns him down and arranges to have him transferred to an another English class.