**Chapter 4: Moans and Melting Tension**

As Crystal's moans began to build, Alex couldn't help but join in, his own voice rising to meet hers. The sounds of their pleasure filled the air, a sensual melody that seemed to match the rhythm of their bodies. Crystal's mouth moved up and down Alex's cock, her tongue dancing across his skin as she sucked him off with increasing intensity. The choking sensation had passed, and now Crystal was lost in the moment, her body responding to the pleasure of the encounter. She was moaning around Alex's cock, the vibrations of her voice sending shivers down his spine. Alex's hands were on her head, gently guiding her as she moved up and down his shaft. As they moved together, the tension between them began to melt away. They were no longer aware of anything except the sensation of their bodies, the pleasure and the passion that was building between them. Crystal's hands were still grasping Alex's thighs, her fingers digging into his skin as she lost herself in the moment. The room around them was quiet, the only sound the heavy breathing and the moans of pleasure. It was as if they were in their own little world, a world of passion and desire. They were no longer thinking, no longer worrying about anything except the sensation of the moment. As Crystal's moans grew louder, Alex's own voice rose to meet hers. They were making music together, a sensual melody that seemed to match the rhythm of their hearts. The pleasure was building, and they were both on the verge of losing control. Crystal's mouth was moving faster now, her tongue dancing across Alex's skin as she sucked him off with increasing intensity. Alex's body was responding, his muscles tensing as he felt the pleasure build. He was close to coming, and he knew that Crystal was too. The air was charged with excitement, and the tension between them was palpable. They were both aware that they were on the cusp of something big, something that would change them forever. And as they moved together, lost in the moment, they knew that there was no going back. As they teetered on the edge, Crystal's moans grew louder, her voice rising to a crescendo. Alex's own voice was lost in hers, their sounds mingling together as they moved towards the climax. The pleasure was almost too much to bear, and they both knew that they were about to be consumed by it. In this moment, nothing else mattered. They were two people, lost in the passion of the moment, their bodies responding to each other's desires. They were no longer thinking, no longer worrying about anything except the sensation of the moment. All that mattered was the pleasure, and the passion that was building between them.