Joanna slid across the tile to Greg and touched what would have been his thigh if he wasn't turning into a mermaid. The scales felt slick and very real. Greg's body spasmed slightly at Joanna's touch. His knees were gone now, scales going up past Greg's hips and up his sides and under his breasts. Breasts that had grown at least as big as Joanna's and were so pert and perfect she felt a little envious. She continued to explore her boyfriend's transformed body with her hands and eyes. Thin, fleshy webbing between Greg's fingers, scales on the back of his hands and forearms, his face seemed feminine complete with luscious lips. He still seemed in a daze, but moaned softly when Joanna touched certain places. Joanna couldn't believe how quickly he'd gone from man to mermaid.
She moved her hands to Greg's new breasts, curious at first, but she soon found herself fondling them. This seemed to finally bring Greg out of his daze. Realizing she had probably gone to far, Joanna removed her hands only to have Greg gently grab her wrists and place her hands back where they had just been. Then Greg pulled Joanna into a long, passionate kiss.
Joanna felt aroused and a little confused. Was she turned on by Greg, by making out with another woman, or by mermaids? Or all of the above? She tried to swing her leg over Greg's tail, but failed as her own transformation was melding her legs together as well. Joanna ended with her partial tail on top of Greg's nearly complete tail and the feeling of the two rubbing together was exciting for both soon-to-be-mermaids. They continued to kiss and grope until Greg's tail finished forming, completing his transformation and triggering his first female orgasm. Joanna felt her own transformation proceeding faster and she pressed what remained of her legs tightly together to try to speed it along. Greg had barely finished shaking with pleasure when Joanna's transformation completed and she orgasmed too.
The two mermaids held each other in the afterglow, sprawled on the floor of the shower.