No, that is not what love is about.
Part of love is respect. And it's not respectful to demand that she do something you want even if it makes her feel like puking.
It's very easy to say that you would do the same back, but how would you feel if she demanded to do something that hurt, or made you feel nauseous or just uncomfortable? If HER must-have was to punch you in the face during sex would that be okay because 'if you really loved me, you'd do whatever was necessary'?