Mike sat solemnly as Rachael's tale had gotten worse and worse. He still just sat there trying to absorb the news. "Rachael, that's really disappointing to hear." Mike finally responded. "But I know that feeling. That first change really ramps up your sex drive. It's impossible to resist, so I get it. I forgive you."
"Oh thank goodness!" Rachael blurted. "I couldn't stand to loose you." Rachael ran over and gave Mike a big hug. She could feel her lust stirring within her as she pressed up against Mike. She could feel his long thick shaft rub against her. Her feet began to cramp and Rachael looked down to see her toes merging together and growing into one sturdy hoof. "Mike!" Rachael looked back up at him smiling. "It's definitely contagious."
"You're right about that. The real question is, are you going to freak out this time?" Mike replied as he dropped his towel and revealed his large member. Even as he did this fur began rippling out of his skin. His feet pushed up onto the balls of his feet and a solid hoof formed where his toes and foot used to be.
Rachael smiled as she responded. "Not this time. I've actually been looking forward to this the whole drive back. I just thought I would have to stop and get more of that drink." While she spoke, her breasts pushed out further, proudly displaying her erect nipples while piece by piece her ragged clothes ripped of her growing frame and fell to the floor. Her muscles expanded and she could feel coarse fur traveling up her new powerful legs, over her enlarged butt and around her swollen pussy. Rachael aggressively pushed Mike back onto the couch (Which barely managed to hold them) and proceeded to mount his gigantic cock. She could feel the whole thing as she took his entire length. Her sopping hole proving more than adequate to lubricate his shaft.
Mike began pumping, in and out, in and out. With each thrust more changed. Rachaels ears grew tall and thin. Her hair lengthened and grew down her back. His hands changed, forming two fingers and a thumb. He could feel his tail begin to push out underneath him and he watched Rachael while her muscles grew back to body builder size. Hair started to lengthen out of her neck and back until she had what could only be referred to as a mane.
Rachael looked back as she felt her tail form and push out. She relished the feeling of having a tail. Heck, she relished all of it, from her hooves to her muzzle, it was amazing!
Mike and Rachael continued lovemaking long after their bodies had finished changing. Each of them thoroughly expending their energy and seed until with a triumphant whiny, they both came.