The mermaid's words terrified you. You looked over at Sally. Her pink tail shimmering in the water. You swim over to her. "E-Er... what was your name? I can't quite..." She said.
"Er- Erin? Eris? I'm Eris? No, no that can't be it S-Sa..." You try to remember her name, but you can't quite grasp it.
"Sal... Sal-Selene? Is that it?"
"I don't know. My memories... so fuzzy."
Selene holds you tightly. "I'm scared, Eris!"
"Me too, Selene!"
"Don't be frightened," the mermaid said, "It's not like we're taking your past away; it will be as if you have awoken from a dream.
"It does seem that way, doesn't it?" Selene asked.
"Yes," you seemed to be put at ease by the mermaid's words, "but I know you're special to me; like a favorite Sister." you say to Selene.
"But what of our other sisters; don't they deserve our love, too?"
"Do not mind us," another of the mermaids said, "this is your time to sort things out together."
"We will be here when you need us." Still another said.
The two of you turn back to each other, passion and arousal evident in the both of you as the seams of your tails part. You wrap your arms around one another, plunging your tongues into each others' mouths, pressing your breasts and vaginas together. You even felt your clits engorging, pushing forth, entering your vaginas.
The two of you eagerly thrust your hips, pushing your clits into each other, savoring the sensations, all the while, the haze washed over your minds, preserving your identities, but leaving your past lives a blur.
Your moans echoed throughout the cove, encouraging the other mermaids to pair off and make love. Time lost all meaning in the waves of pleasure experienced by the two of you. Each motion was far greater than any orgasm you've known, yet climax eluded you for a full hour before two high pitches shrieks sounded across the cove. You and Selene orgasmed together. A round of similar shrieks returned to you from the other pairs of mermaids orgasming, triggering a second climax from the both of you.
Once you and Selene came down from your sexual high, you looked at each other and said, "I love you, sister." together.