Thanks for the wonderful comments and questions, Blue Monday! By the way, if that's a picture of you in your avatar, my compliments both to your legs and your photographer!

The narrator's name is my name, and I'm keeping myself anonymous, so the narrator does too. His initial is "S", and Lynn bears it in a personal place.

The other questions are harder, because so much of me is in there. I'm cold because I don't like her, and gentle because I have trouble hurting anyone in a premeditated way. I can of course get angry and hit someone and feel sorry afterwards, but I can't do the cold-blooded violence thing, and this fantasy works best because I'm letting it be about me. As soon as I make it about someone else, it's harder to write.

Contempt and irritation, but also some attraction. Why does he have sex with her instead of hurting her or getting rid of her?
First, because her original challenge to him was sexual -- she challenged his manhood, while he stood naked in the shower and she stood nearly so, just outside the door.
Second, because he's a horny 20-year-old guy who is up for sex with practically anything--even the crack of dawn looks good. He has no luck at the bars, and she has a nice body. He says in Chapter 1 that he'd put a paper bag over her head if necessary. And she's forced to be silent, so he doesn't have to put up with the usual price of sex
Third because even in my fantasy, violence is illegal and has consequences, whereas consensual sex is between consenting adults. Aside from those few stomach punches, brief bondage, and the butt plug at the beginning (which leave no marks and are pretty much impossible to prove later), Lynn consents (in some sense) to everything he ever does to her body, and that's important because he doesn't want to end up at the police station. Remember Lynn goes to work every day between sessions. This is a real-world situation. Real police are somewhere out there too.
And lastly because she's so religious and uptight and aggressive about it that turning her into a horny, willing slut, outraging all she stands for, is a perfect revenge.

I'm sad that you don't think the narrator tries to divine her feelings. I think nearly every paragraph where she submits or obeys has some attempt to guess how she's feeling. Even her nods or looks are given an interpretation from the narrator's point of view, though not a guaranteed correct one. I will look it over again with this question in mind, but I'm amazed I've left those reactions out that often.

I would just LOVE to give some background of "Lynn's" typical utterances before, and the dynamic between the housemates, and it's sad that I can't remember enough of those dialogues, 20 years later, well enough to do that, and I'm not a good enough writer yet to make it up convincingly. I'll try again sometime, and maybe have a talk with "Chuck", who I'm still in touch with and might have a better memory for dialogue than I do. Yeah, the people are all real, so is the house. The shower pounding at the door, complete with insults, and earlier accidental naked viewing happened. The rest is fiction, but more of the "gee I shoulda just ..." kinda fiction.

And last, about what Lynn's thinking -- this gets more and more important. In chapter 3 you see that she's starting to control the situation a bit as her need to be dominated exceeds the narrator's will to dominate. In chapter 4 you'll see her take a very proactive role, though her motivations remain mysterious. Chapter 7 is told entirely from her point of view. Chapters 8 through 11 have almost no Lynn in them, but by chapter 12, still unwritten, what Lynn thinks will control the future of everyone in the story.

Looking forward to more comments! Thanks so much. I do wonder why so few people view these threads.