class PairRequestForm(forms.Form):
    favorite_choices = forms.ChoiceField(choices=[], widget=RadioSelect, required=False)

class PairRequestView(FormView):
    form_class = PairRequestForm

    def get_initial(self):
        requester_obj = Profile.objects.get(user__username=self.request.user)
        accepter_obj = Profile.objects.get(user__username=self.kwargs.get("username"))

        # `get_favorites()` is the object's method which returns a tuple.
        favorites_set = requester_obj.get_favorites()

        initial = super(PairRequestView, self).get_initial()

        initial['favorite_choices'] = favorites_set

        return initial

def get_favorites(self):
        return (('a', self.fave1), ('b', self.fave2), ('c', self.fave3))