Fantasy is very different to reality, I remember this dominatrix was on howard sterns radio show, she said she had more than a few guys who asked her to shyt on them, or shyt in their mouths, she was willing to do this, but when it came to actually these guys turning up, very few did, and the ones who did turn up even fewer actually let her shyt on them and even fewer still actually enjoyed it.
Same goes for these girls who fantasise about rape, these girls in reality probably want some man they find very attractive to just hold them down and fukk them, maybe a man they are in a relationship with ,or a random handsome stranger who will fufil their fantasy, in actual fact they still want to maintain control because this random stranger will do what she wants,
I highly highly doubt the vast vast majority of girls would want to be actually raped, for one the man won't be some random handsome stranger who will do what she wants in her fantasy ,he will be a human being that she can't control who has his own issues ,he probably hates women and wants to take his frustrations out on them.He probably won't want her to like it, she almost certainly won't be able to get him to stop or stop him,
Many rape victims shyt or piss themselves during the rape, sometimes the rapist beats them or even kills them as well,she won't have any say in what he does , for the rapist it more than likely won't be about sex but power and control and hurting the woman, that is why the stigma of rapists being ugly men who cannot get sex is normally wrong. Many rapists are married ,have children themselves ,a few are actually goodlooking.
Afterwards, some rape victims kill themselves,some have life long injuries or scars from the rape, others develop serious mental health issues, some cannot ever be in a relationship with another man which means if she happens to be married the marriage is over, That is the reality of rape, and this is why women who fantasise about it, like men who want someone to shyt on them shouldn't be taken seriously.
I personally wouldn't dump a girl for having that fantasy because plenty of people in their deep recess's of their mind have all sorts of thoughts ,I would just put it down to her being a bit silly, I might tie her up,give her a spanking or pull her hair or something if she wants.