OK. Short, but interesting. I enjoyed it, for the most part. One major problem, though. (SPOLIER ALERT!) There are three endings. Two are fine, but one, he literally rapes her and it just ends. That's it. Rape, and game over. That's pretty fucked up. The rape path should end with him getting raped in prison. Or killed for being a child molester. (I know, I know, she's 18, but it's close enough.)
Regardless, the story should be longer. Like, it should tell the story of a "relationship" between them, with her blackmailing him or something over the span of weeks or months. It should be more than just one scene. I can give you some ideas if you're interested.