Ethan and Ava kissed passionately on the bed, their naked bodies pressed together with Ava on top. Ethan's hands roamed over Ava's body and she enjoyed every moment of it. As much as both were eager to get to the sex, they were also both very much enjoying Ava's new catgirl body. Ava's kissing soon left Ethan's mouth and began working its way down his neck. It was at that moment that Ethan made a serious mistake. He had been running his hands down Ava's fur, petting her in the right direction when he accidentally ran his hands over her fur in the wrong direction. At that moment, Ava's mouth was only inches from Ethan's neck.
"Ouch!" screamed Ethan.
"Sorry!" Ava quickly responded. "That was instinctive."
"You've got some fangs now" he warned. "Am I bleeding?"
Ava rather her tongue over her teeth and found that they were indeed sharper than normal as a result of her transformation. "I guess I do. I drew blood, but only a little - like a paper cut."
"I guess I'll have to be more careful."
"You better" said Ava, adding a playful swat.
They kissed again until Ethan broke it off. "I think my butt is falling asleep. All the blood must be rushing elsewhere."
Ethan chuckled at his joke, but Ava wasn't laughing. "Your eyes!" she exclaimed. Cat eyes were staring back at her. She quickly reached under her boyfriend, feeling around for something she found. "You've got the nub of a tail!"
"What?!" Ethan pushed Ava off of him and onto the bed next to him, sat up, and felt his backside. "Why am I turning into a cat too?"
Nothing like this happened last month when Ava turned into a mermaid. "Is it because I bit you?" she wondered. "Like in those werewolf movies?"
"I guess" said Ethan. "What else could it be?"
He shifted his position to get up, but ended up on his hands and knees in bed when a strange sensation hit him like a kick to the balls. He cried out in shock. Then came a feeling of pressure as his tail grew, combined with his stomach cramping. Ethan clutched his sides, his head spinning with confused sensations.
"Ethan, are you okay?" asked Ava. He is only response was a strange moan, halfway between pleasure and pain. She crawled over and wrapped her arms around Ethan as his body spasmed.
It felt like an eternity, but Ethan began to feel normal again. Sort of. The nausea and cramping had passed, but his body still didn't feel right. Ethan slowly sat up in a kneeling position and looked at Ava. Her eyes and mouth were wide. She reached out and felt Ethan's chest with her hands. Unfamiliar pleasure swept over Ethan's body. He looked down to find he had breasts. He felt his crotch and found a warm, wet slit.
"Ohmygod!" exclaimed Ava. "You've turned into a catgirl too!"