Or he could just be a retard.
While Chris's latest letter has done the impossible and got me to feel sorry for Barb, I don't think you need all that power fantasy speculation shit to explain what happened.
The fact that he is eager now to raise money to buy the house from under Barb and kick her out to a nursing home is clear evidence that the sex wasn't because of misplaced affection.
Or, he just wants to go back to his toys because he's a manchild, and because he's entitled, Barb has to go somewhere else. It's a huge stretch to go from Chris misses his legos to Chris wants to exert power over Barb through sex.
Affection and attraction had absolutely nothing to do with it. Sex to Chris was about exerting power over Barb. For many years, Barb held power over Chris, and when Barb started faltering and needed his help he resented it. When Barb got weak enough mentally, he took his revenge by exerting the ultimate power over her.
Fanfiction, except for the resentment part, but that's because he's a manchild that doesn't want to hold any responsibilities.
She told him to stop and he overpowered her. When she realized what had happened, she couldn't say anything about it because without Chris to help her, she wouldn't be able to live the life she was used to at 14 BC.
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She kept quiet, and Chris proceeded to get how to books about the best way to rape her without leaving a mark, and put big red X's on the calendar to mark the nights he was going to overpower her next.
That's not what the book's about at all lmao. What the book does say is that one should stick to a regular schedule, which explains the every 3 days.
Maybe he always was a monster, just too subjugated to cause any real trouble. But now that he's learned how to take power over the weak, Chris isn't just a threat to old people... he is a threat to anyone more powerless than he is. Sex isn't about attraction to him. He doesn't fantasize about old ladies. Sex is about power to him. He plays back the sickest power trip tropes in his head from the porn he obsessed over for years. He's a threat to small children, mentally unstable people, elderly people and non-self sufficient handicapped people.
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You may very well be correct in your assessment of Chris, and he may indeed be a monster for all I know, but you are projecting all sorts of typical rapist mannerisms and mentality onto Chris without much evidence. All of Chris's current actions can be explained by his well documented personality traits such as extreme entitlement, infatuation with his mother, delusions of godhood, obsession with material possessions, narcissism, severe autism, not fully understanding the concept of death, etc. I'm not saying that Chris couldn't have turned into a vicious sadistic rapist at some point in time, or he couldn't have secretly been a monster all along, but you're going to have to back that assertion up with more than just Barbussy rape fanfiction. If Chris always had this crazy power sex control fantasy mindset, somebody would have known about it by now.