Tactical error or not, I think it was within Aiden's character to smugly brag to Sophia what he did to her, just to humiliate her more. That's what his type does.
There were no gangs in my schools, but there were plenty of troublemakers, punks, and bad boys, who took great pleasure by tormenting and humiliating our teachers on a regular basis. Not just class clowns who wanted to get laughs, but guys who were out to embarrass the teachers. So short of the blackmail, I knew a number of Aiden types.
This is a small anecdotal sample - over the years, I've corresponded with a handful of female teachers that I met on various forums like this. Even with the anonymity of the internet, it is real hard to get a teacher to admit that she has even brief passing fantasies about her own students. But when they did admit it, it was often the "bad boys" in their class, the ones that tormented them at school, that they had fantasies about. I have no idea if L&P thinks this is true, but I'm betting that Aiden will continue to torment Sophia, and then Sophia will get angry at him again and call him names; but continue to get aroused by Aiden's tasks and by Aiden himself.
I don't think that Aiden and Sophia will have sex any time soon, but I don't see any compelling reasons to think that Aiden wouldn't want to have sex with Sophia, or that they won't ultimately have sex.