Threesome with Wife & Step-sister

As the threesome began, the husband watched his wife and step-sister undress each other, their soft moans filling the room. Their bodies glistened with sweat as they explored each other's curves. He couldn't tear his eyes away from the sight of their perfect bodies intertwined.Suddenly, his wife turned to him, her eyes filled with desire. She beckoned him towards them. He hesitated for a moment, torn between his loyalty to his wife and the intense attraction he felt for his step-sister.His wife took matters into her own hands (or rather, lips), kissing him passionately as she pulled him onto the bed between them. She straddled him, grinding her hips against his growing erection while her step-sister teased him with feather-light touches.The tension built up within him, as he stared at the approaching storm on the horizon.