What a wonderful story...I look forward to the conclusion!
I love the fact that Superman feels the effects of the pheromone. Of course he would be--our attraction to the opposite sex is closely tied to the pheromones we produce. If he didn't have such a reaction, it would suggest that he is biologically incompatible with humans (thereby ruining a perfectly good love story).
As for the story itself, it is wonderfully sexy without being explicit. Both characters have to deal with their fears and their desires, and I love how you have them interact in order to get to the truth.
Great premise and wonderful execution.
