**Chapter 8: Beyond the Limits of Pleasure**

As they moved in tandem, their bodies began to tremble with anticipation, the tension building to a crescendo that could no longer be denied. Grizelda's eyes locked onto Bertrand's, and she could see the desperation there, the need for release that seemed to match her own. With a sudden surge of passion, they both climaxed, their bodies shuddering with pleasure as they let go of all restraint. But even as Grizelda felt her own release, she knew that she wasn't finished yet. And to her surprise, Bertrand's cock remained hard, still pulsing with life as he gazed up at her with a hungry gleam in his eye. Without a word, Grizelda turned around, her body still trembling with aftershocks as she positioned herself over Bertrand's cock. This time, it was his cock that would invade her ass, a prospect that sent shivers down her spine. Grizelda took a deep breath, her heart pounding with anticipation as she slowly began to lower herself down. The size of Bertrand's cock was intimidating, and Grizelda felt her breath catch in her throat as she felt it stretching her, pushing her to the limits of her endurance. As she sank lower, Bertrand's cock seemed to grow even bigger, filling her to the brim. Grizelda felt her eyes rolling back in her head, her body screaming in protest as it struggled to accommodate the invasion. But she refused to give up, her body slowly adjusting to the size of Bertrand's cock as she worked to take him in. Bertrand's hands roamed over her body, caressing her breasts and shoulders as he planted kisses on her neck and back. His touch sent shivers down her spine, and Grizelda felt herself becoming lost in the sensation of his body connected to hers. With a slow, sensual movement, she began to rise up, Bertrand's cock sliding out of her before she slowly lowered herself back down. The sensation was almost overwhelming, and Grizelda felt herself becoming one with Bertrand's body, their two forms merging into a single, pulsing entity. As she rode him, Bertrand's hands continued to caress her, his fingers tracing patterns on her skin as he whispered words of encouragement in her ear. Grizelda felt herself building towards another climax, her body tense with anticipation as she worked to take Bertrand's cock to new depths. And Bertrand, sensing her desire, began to move beneath her, his hips thrusting up to meet her as they both sought to reach the ultimate limit of their pleasure. The world around them melted away, leaving only the two of them, lost in a sea of passion and desire.