Ms. Maisar walked off into the darkness, leaving Pam and David alone. The light had faded completely from the sky now, but some lights on the back of Pam's house light up the area around the pool.
"So what do we do with this?" Pam wondered, refering to the remaining magical lotion.
"Would you massage my tail, using the lotion?" asked David.
"What will it do?"
"It's an excuse for you to rub my tail. My muscles are sore after all the swimming today" explained David with a smile, only half-fibbing.
That was good enough for Pam. David rolled onto his stomach and Pam sat straddling his tail. She poured some lotion on her hands then began massaging her way down from his waist.
"Nice tush" she added, giving his scaly backside a playful squeeze.
She worked her way down his tail then down to the tips of his tailfin. The lotion on her hands caused her to feel the sea call to her again, but she resisted. David rolled over, now on his back again. Pam poured some lotion down the front of his tail then poured the rest of her hands. She began work his tailfin again and noticed it was feeling a little thicker than when she'd started. She began to work her way up David's tail. Though his eyes were closed, she could tell by the smile on David's face he was quite enjoying himself. As she worked her way up his tail, she began to feel clearly aroused.
Nearing the end of the massage, she noticed David's tail wasn't the same shade of blue it had been before. Sensing something was amiss, she stopped and stepped to the side, looking over David's whole tail. It was clear his tail was changing color.
"Is something the matter?" asked David, wondering why the massage had stopped short.
"Your tail...it's...different..."
"What do you mean?" replied David, feigning ignorance.
"It's not really blue anymore. More like...gray. Almost like..."
Pam looked down at her own legs then at David's tail. She ran a hand up David's tail which no longer felt scaly.
"Your tail is changing to be a dolphin tail, like mine!" Pam exclaimed.
"Yep."
Pam looked David in the eyes. "You knew it would?"
"Ms. Maisar told me it would" said Davin with a grin.
"So the massage was just a ploy?" asked Pam, pointing an accusing in David's face.
"No, changing my tail to match yours was an excuse to get a massage."
"You sneaky..." said Pam leaning closer "...little...merman."
She puncuated the last word with a kiss then broke it off too soon for David's liking.
"I believe I have a massage to finish" Pam declared. "Close you eyes."
David did as requested. The sight of David as not just a merman, but a dolphin-tailed merman had aroused her even further. Pam let the board shorts slide down her dolphin-skin legs to the pool deck. She also at last discarded her bikini top. She resumed a posistion straddling David's tail, becoming wet with anticipation but not yet alerting him to what was going on. She resumed her massage, working her way the rest of the way up the front of David's tail but paying special attention to where she figured his member now hid sheathed inside his dolphin tail. When the grin on David's face got wider she knew she was in the right spot. She continued the pretext of the massage. Would sex transform her back into a mermaid and would it be permanent this time? She didn't care anymore. She had come to realize she wanted David and she wanted to be with him.
Pam leaned down and kissed David, pressing her naked body against his. David could feel a new intensity and lust in Pam's kiss as well as Pam's nakedness against his body. He could feel himself rising to the occasion.
"Are you sure you're ready?"
"I'm ready to be your mermaid, merboy".
Feeling David's member unsheahed, Pam slid herself atop him.