Your thoughts are jumbled mess as KATHY approaches. You remember how quickly she changed after the physical changes started, you reason you have half an hour tops before you are a full on wolfman. Where would you escape to as by the time you reached help you wouldn't be receptive to it anymore.
You decide you can't get out of this situation, but if you are going to become a horny werewolf you might as well do it on your terms. You stand up, looking Kathy in the eyes while you do so. A look of puzzlement crosses her canine face, which turns to more shock as you grab her, throwing you and her lupine body down on the couch.
You insert yourself into Kathy, as you do so you feel her fur and lubricant, and let out a growl of lust. You stare into Kathy's eyes as you thrust picturing the woman she was and hoping than when you are done that relationship won't change.
With each thrust you can feel the changes start, something Kathy is eager to help you with. You feel you muscles twist and expand under your skin while above it a black fur starts cascading out of you in waves. Your thoughts have stopped being about Kathy's former shape, instead as you continue to ride her you love her new one more and more. You grab at her fur covered back centering yourself as your claws dig in. She lets out a howl of pleasure from her pristine face as you find yourself kissing her muzzle lost in ecstasy. Her claws tear at your shreaded clothes freeing your increasingly furry form, when your back cracks and your new tail rapidly comes in.
You can feel even more changes willing them on in thrall to the change. Your toes that have dug into the leather are tearing it up as they have become claws as your feet have grown pads and expanded into large paws. You let out a snarl of pain as your knees twist encouraging you to stay on your fours. Your dick is massive now as you thrust your shaft into your moaning mate. You force your face further into hers tongues exploring each others. Her tongue runs over your teeth as they extend into fangs, nothing could stop you now. Kathy reaches out with her paws gripping your tail as she fondles it, bucking into you with her massive tits.
As you approach climax you can feel some minor changes finish, your ears have torn their way to the top of your head ending in the points of a wolf. The final change begins as you climax. Your skull lets out a crack as your nose a mouth start to jut forward. With each burst of cum into your partner, your face extends further culminating with a howl from your new muzzle as you blast one more load into the furry satisfied pussy of your werewolf mate.