I am trying to expand upon an idea for a story. It is about a young female student who is either in high school or college, and she becomes infatuated with an older male teacher/professor. There are several ways to go with it – mainly, I was thinking either a romantic, erotic type of story OR a disturbing series of events in which the professor actually then reciprocates the feelings and actions. For example, the student fantasizes about him and wants to call his office phone just to hear his voice over the voicemail (somewhat creepy, but more innocent) – then the professor calls her phone and says strange things, essentially changing the entire dynamic of the situation. The change of context would be the main focus on the story. I also thought of possibly writing of small situations in which they meet, but the student then deeply fantasizing of them sexually. The end of the story would be the climax when is it revealed that the male professor actually raped her/assaulted her and she developed a split personality or something. Does anyone have suggestions? I know the gist of the story and characters, but I have a really difficult time creating a readable plot.