You try to focus, but as you see and feel the fox man against you, you realize his manliness- to say nothing of his animal nature- is intoxicating. His body feels so firm and warm and strong, though from the way he's nuzzling and licking at you, you can tell he has an affectionate side too.
Suddenly he makes a move that makes you set aside your indecision- he pinches and licks your nipples, and you moan in an oddly high-pitched tone as they swell under his touch. It feels so good to have him pleasure you like this, and your body and mind can't deny it anymore. You feel your cock start to shrink against his sheath, while soft flesh swells on your chest. His large paws grasp at it and you moan more and more eagerly, your breasts seeming to grow more with every harsh ministration he gives. At the same time, your balls tug and move up inside you, and he kisses and smirks at you as he feels you become castrated.
"Doesn't it feel so good to become female?" he purrs, unflinchingly as if he's done this to scores of men- or had this done to him and knows exactly how it feels. You can't disagree with him, particularly with his paws and shaft pleasuring you. By now you have B-cup breasts and your shaft is barely 2 inches long, and you feel a weird sensation at your crotch where your balls once hung inside you.
"I can't wait to show you how good it feels to be bred," he adds, and when he says that any hesitation you had left about this change falls away as something inside you seems to click. He doesn't want to 'have sex' or even 'fuck'- he wants to breed. And so do you. You can tell it will be instinctive and forceful, and as much as pleasure, the point of the act will be your impregnation. Your body, before made to fertilize others in sex, now exists to be fertilized.
You had already lost your firm grip on your masculinity, but now your grip on your humanity is fading as well. Your skin starts to sprout fur, your face pushes out into a snout and you and the fox man lick at each other passionately, and a tail pushes out from above your ass. You and this fox are going to mate like animals, and you will bear a brood.
And as you think that, the last change necessary for that to happen occurs. Your shaft finishes its shrinkage and settles into a small hood, by now far more tiny and far more sensitive than when you were a human male, while a slit opens at your scrotum and the skin around it forms lips, which moisten rapidly. You need this fox's sheath inside you, to fill you, to mate you.
As if sensing this, he kisses you and pushes you to the floor, getting on all fours and positioning himself so his sheath's large red tip rubs your newformed vaginal lips.