Despite how badly her plan had miscarried, Gisela was glad to be back in her mermaid form. Yet something didn't feel quite right. Gisela could feel her long blonde hair down on her shoulders. She caressed her voluptuous breasts. She reached down to feel the scales of her golden tail and her...oh no...
Kevin watched Gisela turn back into a mermaid. She was beautiful. He was reminded when so recently he had come back to this very hotel room with this very woman, eager to spend the night with her as a human when he felt jilted by Lilia - only to have Gisela use some kind of magical kiss. If not for that mishap would Kevin have ever learned of Lilia's secret? Kevin thought of his mermaid-on-mermaid experience with Lilia. Now, laying naked on the floor next to Gisela, Kevin wanted another such experience. That's when Kevin realized Gisela hadn't completely returned to mermaid form.
In disbelief, Gisela wrapped a hand around her erect penis. Was it because Kevin had temporarily regained his human form and thus disrupted the spell? Was it because Gisela had transformed from human back to mermaid while her male body was aroused by Kevin's mermaid form and the sexual energy disrupted the spell? Gisela didn't know. But as she looked at Kevin's naked mermaid body Gisela felt an overwhelming urge to fuck him.
Kevin though of what he had experienced recently with Lilia. Both times they had sex Lilia had been a mermaid - one with Kevin as a mermaid, and once with Kevin in his normal human male form. Now Kevin was a mermaid again and his pussy was wet at the thought of Gisela fucking him. What would Lilia say if she found out? Kevin didn't know, but he felt too horny to resist his body's urges.
Kevin rolled onto his side and Gisela turned her head to meet him. The two mers kissed, tentatively at first then more passionately. Kevin reached to stroke Gisela's penis and Gisela caressed one of Kevin's breasts. Their anger and fear had melted into mutual lust.