She gasps as you twist your hips again, her body tenses and releases in a powerful orgasm that wracks through her. Her muscles clamp down on you, milking your cock as she cries out in pleasure. "Oh God... Rostislav..." She pants, her voice hoarse from exertion.
Her legs tremble as the last waves of pleasure wash over her, and she collapses bonelessly onto the bed, spent. "That was amazing," she whispers, smiling up at you.