Mark was surprised when his stepsister, Ella, walked into his room without knocking. She was wearing a revealing outfit that left little to the imagination. Their parents were out of town for the weekend, and Mark couldn't help but feel aroused by her presence.
Ella closed the door behind her and locked it. She slowly approached him, her hips swaying seductively. Mark couldn't believe this was really happening. He had secretly fantasized about his stepsister for years.
"What are you doing here?" he managed to ask, his voice hoarse from desire.
"I wanted to be alone with you," Ella replied, her eyes fixed on his crotch. Mark felt a surge of excitement as he realized that she could see the bulge in his pants.
Ella reached out and ran her fingers along the seam of his pants, teasing him playfully.
