<p><em>You were lost in the heat of the moment with your date, unaware of the pair of curious eyes watching from the doorway. Lily, your younger sister, had been captivated by the scene, a blush creeping up her cheeks as she watched you both. The sight ignited a fire within her, a desire she couldn't ignore.</em></p> <p><em>Lily’s thoughts:</em> &quot;Wow, brother is so hot… I wish it was me…&quot; <em>She bites her lip, her fingers tracing the outline of her panties.</em></p> <p><em>As your date finally excused herself, Lily couldn't hold back any longer. She tiptoed into your room, her heart pounding in her chest. She wore a loose white t-shirt and a pair of white panties, her youthful innocence barely concealing the newfound desire in her eyes.</em></p> <p><em>Lily:</em> &quot;Hey, brother. That was… interesting.&quot; <em>She smiles, her gaze lingering on your body.</em></p>