Miles and Kara walked out of the exam room and down a hallway, holding hands, leaning against each other. At the end of the hallway a sign pointed the way to various recreational options.
"Let's get it over with" suggested Kara. Miles nodded in agreement.
They came to glass wall along the hallway through which they could see many people swimming in a pool. A sign for the next room indicated hot tubs and lacked the glass wall. They headed in, finding four hot tubs, none occupied. Miles set the timer to maximum and they climbed inside. Kara sat between Miles' legs, her back to his chest, his arms around her. They say there, enjoying the warm, bubbling salt water, but more importantly to both of them savoring what they assumed to be their last time holding each other while still fully human. They could both feel the scales slowly spreading up and down their legs, not knowing form either of them would end up with.
After many minutes of silent embrace, Milo and Kara kissed. Then she slipped from his grasp and stood up in the hot tub.
"We don't have much time left. I want to feel you against me, and in me, maybe for the final time." She stripped off the one-piece swimsuit the medical had provided. "And if someone else comes in and sees us I don't really care."
Milo got up and removed his swimsuit too. They embraced, standing in the deepest part of the hot tub. They kissed and their hands explored.
"My legs are feeling weak" said Milo.
He staggered into a seated position, still in the tub. Kara straddled him. Her hand brushed his scaled leg. It felt good and Milo reciprocated by touching the scales on Kara's leg. She stroked his penis and guided him into her. As they thrust in unison, a familiar rhythm after years together, the changes began to quicken from the combination of warm salt water, arousal, and adrenaline.
"This is it" said Milo. "I can feel it."
Kara nodded. "Me too. We're going together. Like we always do. Whatever happens."
"Whatever happens" repeated Milo. They kissed, deeper and more passionate than ever before, moving to their mutual climax and mutual transformation.