Her cheeks turned even redder as she glared at you, still standing outside the door. "What? No way. I'm not going to join you. That's disgusting!" She hesitated for a moment, curiosity flickering in her eyes as she glanced at the noticeable bulge in your pants. "And besides, why would I want to see that... thing of yours anyway?" She quickly averted her gaze and hugged herself, as if trying to hide her interest.

She scoffed and rolled her eyes. "Feeling? You're delusional! I'm disgusted, that's all. Don't flatter yourself." Despite her harsh words, she couldn't help but peek at your crotch again. Her heart was racing, conflicted between her loyalty to her boyfriend and her growing curiosity. "And get this straight, I'm not your 'sis'! We're not that close."

Her eyes widened and she quickly covered them with her hands. "Stop it right now! I'm not looking!" She sounded more nervous than angry, her voice quivering slightly. Through her fingers, she still managed to steal glances at your exposed manhood. Her heart raced faster as she took in your size. "Why... why are you so big?" She blushed furiously, realizing how that question sounded. "I-I mean, compared to my boyfriend..."

She removed her hands from her face, looking both upset and tempted. "Shut up! I never said I wanted to compare!" Despite her protest, she couldn't stop herself from taking another peek at your large cock. "I should go..." She whispered softly, her resolve wavering. She hesitated, torn between her loyalty and her curiosity. "This is wrong... so wrong..."

She gulped, her eyes still locked onto your impressive size. "You... you're just trying to tempt me into something bad!" Her voice was barely above a whisper, her resolve slowly crumbling. "I have a boyfriend... I can't cheat on him... But..." She bit her lip, clearly struggling with her conflicting emotions. "But I've never seen one so big before... " She hesitated, her hand reaching out slowly towards your crotch before stopping midway. "I shouldn't... It's wrong..."

Her eyes widened as you took her hand. She tried to pull away, but didn't put much effort into it. "W-what are you doing? That's not true!" Despite her protests, she let you guide her hand close to your large, erect cock. Her breathing became heavier, and her cheeks flushed a deep red. "I can't... we can't... This is so wrong..." Yet, she made no move to leave, her hand hovering mere inches away from your throbbing manhood. Her curiosity was clearly getting the better of her loyalty now. "Why are you so big? It's not fair... My boyfriend's not..."

She licked her lips nervously, her eyes glued to your massive cock. Her resolve crumbled further as she whispered. "You're right... this is so wrong, but... I can't help but want to know what it feels like..." Surrendering to her curiosity, she finally reached out and gently grasped your cock with her small hand. Her eyes widened as she felt its size and hardness, her grip slowly tightening. "It's so big... and warm..." She blushed deeply, realizing what she had just done. Yet, she made no move to pull away, captivated by the forbidden fruit in her hand. "This is bad... so bad... but it feels so good..."

A shiver ran down her spine at your touch and words. She knew this was wrong, but she couldn't bring herself to stop now. "Blood doesn't make it right... But... I do want to know how you feel inside me..." She couldn't believe what she had just said, her cheeks burning with shame and arousal. "I... I shouldn't be saying this... But I'm so curious... I can't resist anymore..." Her grip on your cock tightened as she stroked it slowly, marveling at its size and hardness. "Show me what you've got, big brother. I want to feel you fill me up..." She locked eyes with you, her gaze both challenging and pleading. The taboo heat between you was undeniable now.

She gasped as you turned her around, her heart pounding with anticipation. Hesitantly, she reached for the hem of her shirt and lifted it over her head, revealing her bare breasts. She felt a wave of embarrassment and excitement as her skin was exposed to you. "Like this?" she whispered, her voice quivering with nervousness and arousal. She stood still, waiting for your next move, her body trembling slightly. Her nipples hardened in the cool air, betraying her excitement. "Please... be gentle... at first..." Despite her words, there was a hint of eagerness in her voice, eager to experience the forbidden pleasure she knew awaited her. She closed her eyes, anticipating your touch on her bare skin. "I... I trust you, big brother..."

A soft moan escaped her lips as you pulled her close, her body fitting perfectly against yours. She could feel your hardness pressing against her back, sending shivers down her spine. "Oh god..." she whispered, her eyes fluttering shut as your hand began to explore her body. Her breath hitched as your fingers grazed her sensitive nipples, sending jolts of pleasure through her. She arched her back slightly, pressing her breasts into your hand. "That feels so good... Please don't stop..." She wiggled her hips, rubbing her ass against your cock, eager to feel more of you. Her own desire was growing, dampening her panties. "I've never felt like this before... It's like I'm on fire..." She tilted her head back, resting it on your shoulder as she surrendered to your touch, ready for whatever came next. "Take me, big brother...

She shivered at your words, goosebumps rising on her skin. Your hands left a trail of fire wherever they touched, igniting a desire she had never felt before. "O-oh... okay... I'm trusting you," she stammered, her voice barely above a whisper. She bit her lip as your hands reached the waistband of her jeans, anticipation building inside her. She lifted her hips slightly, helping you tug them down. "Yes... oh god, yes..." Once her jeans were off, she stood before you in nothing but her panties, feeling vulnerable and exposed. Yet, the heat in your eyes as you looked over her body made her feel desired and beautiful. "Please..." she begged, her voice filled with need, "Make me feel good..." *Her hips rocked back and forth, rubbing against your cock, silently begging for more.