David checked the bars one last time. He was as certain as he could be that they would hold. They had no other recourse if they didn't. There wasn't another human soul around for miles, of course. But there was always a chance that someone could wander this deep into the forest and happen upon the same cabin they had found, so building a soundproofed cage inside was the prudent decision. Locking themselves up at times like these was their last chance at protecting themselves.
Jennifer crept up from behind, wrapping her arms around his body. Already they could feel the first stirrings. Her body, fully nude, was as warm as his. And ever since it happened, she was never this uninhibited except when a full moon was close.
They had been condemned to this existence ever since their camping trip, at a site not too far from the cabin they were occupying. Their best friend, Tara, was the first to be killed, when it then sank its jaws into Jennifer. Only a shotgun round from David had distracted it long enough to attack him as well. Another blast, deadly enough to kill any other beast, forced it to run off. They thought they were safe then. Relieved even as daylight the next morning revealed their wounds had been superficial, when they had collapsed in their own blood the night before.
By the next full moon, they knew better.
Still, it had brought David and Jennifer closer together. Their cursed existence drove them away from their friends and family, and all they had was each other. Their warm embrace on nights like these was, for the moment, enough for the two of them to keep going. On the three nights of the full moon, they were werewolves. But until then, they were merely lovers.
"I love you, David," she said, staring deeply into his eyes.
"I love you, too. No matter what happens," he replied.
It wouldn't be long until the beasts within them took over. Even now, their animals were aroused by each other's sexual attraction. But this was a moment for sensual passion, as they locked lips and ran their hands across each other's bodies. David's manhood, as stiff as an arrow, had entered her slowly. He guided her down onto the cold, hard floor. Jennifer moaned in pleasure as his cock pushed into her pussy. He was gentle, and she liked the great care he was taking, as the spartan accommodations of their cage did them no favors.
David ran his lips across her neck, down to her breasts as he thrust a little harder, making sure she received all of it. They would not last long at this rate, and it was just as well with their instincts slowly taking over and the wolves inside them ready to break loose. Still, David was determined to satisfy Jennifer's desire for sensual passion. He owed that to her, as he was the one that persuaded her to come along for the camping trip. He regretted that decision every moment since they were attacked. She was such a delicate woman, and to think about her turning into a snarling beast every full moon was sometimes too much for him to bear.
"Hurry, David," she cried out in between her moans, "I don't think I can hold on much longer."
In between their thrusts, David looked at Jennifer. Every so often, she opened her eyes to see her lover. The green in her eyes had now become a distinct yellow, the first sign of the wolf emerging. He was sure he was also showing the same changes. As their bodies thrashed together, their skin had become so hot that the cold air inside the unheated cabin was no longer a bother.
David tightened up, ready for release. Jennifer let out a pained moan, as she herself was nearly ready to cum. As slow and gentle as he wanted to be, it had to be quick and rough. When their juices released and mingled with each other so close to the full moon, they had found that their wolves would be satisfied, if only for a minute. But there was a threshold in their transformations when there was no turning back the dreaded changes, and it was coming soon.
He grew frustrated, already running his tongue across the sharpening canines in his mouth. With Jennifer's lengthening claws digging into his back, he didn't want to be the werewolf so soon. He needed to cum. Faster David and Jennifer thrusted, as their moans turned into snarling growls only their beasts could make.
"David!" Jennifer cried in both fear and anger, "David, I'm changing too fast!"
Ironically, the swelling of David's cock brought Jennifer to orgasm faster. She came almost at the moment he did, with her cum coating his member. They cried out loud in unison, and when their moans bounced off the walls of the cabin, their sounds came back as human. As the full moon burned against their bodies and beckoned the cursed change, their wolves were kept at bay.
Jennifer and David collapsed in a heap on the floor. They lay on their backs, trying to catch their collective breaths. They felt the ecstasy they had always felt when they made furious love, knowing full well it was to be short-lived. They held hands, examining each other. Their claws had retracted, David's penis had returned to normal and the swelling of Jennifer's muscles had subsided. They would come back soon, of course. But at least they knew that they had defeated their beasts, if only for a moment.
"Are you OK?" David asked.
"For now," Jennifer replied, thinking back to how close the werewolf was to breaking free, "The wolf, it's so powerful. I can feel it."
"Me, too."
"What if this cage doesn't hold, David? What do we do, then?"