300 Characters, Final Edit:
Every morning, Rob had to wake up early. One morning, before everyone else in the house, he found his innocent stepsister sleeping in his bed, her plumped lips slightly parted. He moved closer and noticed her small breaths. His heart raced as he leaned down and kissed her softly, feeling her delicate body tremble beneath him.
As they began to make out passionately, they heard their mother's voice in the kitchen. They froze, their bodies pressed tightly together. Their eyes met as they shared a moment of panic. The siblings knew they shouldn't be caught like this.
Suddenly, an idea crossed Rob's mind - why not use this opportunity for something else? He whispered to his stepsister, and she nodded eagerly. They continued making out while simultaneously undressing each other under the twinkling stars above.
