What does he even want to bed a 12-year-old for, rather than 21 or 29 or 25 or 33 or etc.? The further height and bodily development (fat and muscle and certain hair alike, mind) should add to her look of vitality, not diminish it. (I’m looking at sex qua sex, not sex qua dominance, for now.) Further mental development also helps with her ability to fine-tune both giving and receiving, so what does he have to lose? (Besides somehow gaining pleasure from having a thrall. “Somehow” because I have a hard time imagining how that kind of pleasure operates, non-sexual included. Empathetic imagery keeps getting in the way…)
The way he’s going, I’m not sure how he’d avoid feeling mentally isolated in bed, even with his sort of bedmate.