What the hell? Nipple biting? Did the girl actually go along with it and bite his nipples? That's got to be a hundred times worse than bareback. I would hope that some of these girls would actually have some standards when it comes to some of this. It makes me quiver and second guess a lot of my actions with the girls..
I try to make the girls as comfortable as possible, thus leading to more rewards and them actually liking you(and really just the type of guy I am). Don't really have fetish's like that. Those of you should probably stick to street level mongering when it comes to that. Just my 0.02!