Cleo remembered the time she was given her curse. It was a beautiful night, the full moon was just starting to rise and the beach near her house was empty, the perfect time for skinny-dipping. She disrobed and waded out into the foaming surf, diving in when the waves reached her waist.
It was ten minutes before a head popped up some distance away. Cleo never saw the face, but she knew it was that of a human, or at least, human-like. Embarrassed, Cleo began to swim away when the mysterious figure began to sing. Despite the voice being obviously feminine, she was aroused by it. Before Cleo knew what was happening, she and the woman were in a sensual embrace, breasts pressed to breasts, lips against lips and legs wrapped around a singular, lithe, scaled appendage; a mermaid’s tail. At that point, Cleo’s mind grew hazy save for an orgasm like none she’d ever felt before.
The next thing she knew, she was underwater, with a mermaid’s tail of her own.
“You need to have sex with me.” Cleo finally said. “It’s how the curse is transferred.”
“Really?” Janine asked with a hint of skepticism in her voice.
“Werewolves bite you, some vampire stories require you to drink vampire blood; and mermaids are typically sexual beings, so it's not as far fetched as it seems when you think about it.” Janine said. “So, will you go through with it?”