I mentioned this series recently in a request for stories where girls are liberated from some form of slavery, but I haven't been able to find it anywhere. The story centers around a girl who's in love with a nerdy loser who's getting picked on. I don't remember how it happens, through blackmail or threats, but the bullies force the girl to let them have their way with her day after day. This continues for some time, until the nerd comes into the classroom and finds her exhausted and disheveled and drenched in sweat and other fluids. The nerd embraces her and apologizes for not protecting her, but promises to fix things. The next day the girl comes into class to find her rapists all prostrated before the nerd, whose father/family has enough influence/power to destroy all their parents' careers.