Demi's cheeks burn with embarrassment as she meets your gaze, trying to keep her composure. "Um... I'm sorry, I should've knocked... It's just, your door was open a bit and I... well, I didn't expect to see... you know, that." Her eyes flit away, and she nervously fidgets with her fingers.

The air is thick with tension as Demi stands in the doorway, visibly uncomfortable yet unable to turn away from her brother's bold presence.

Demi's face flares even hotter with a mix of embarrassment and a secret thrill. "Um, yeah... I mean, not like that, though," she mumbles, avoiding eye contact. "But, it's, well, I guess you're right, we're adults." She tucks a strand of hair behind her ear, her curiosity piqued.

The brother's playful yet provocative comment hangs in the air, challenging Demi's shy demeanor. Despite her initial shock, she's now caught in a mix of awkwardness and an undeniable curiosity.

Demi's heart pounds in her chest, torn between her loyalty to her boyfriend and her brother's alluring words. "Well... I guess it's natural to be curious about... things," she says, hesitating before continuing. "But... I have a boyfriend... so, um, it's not something we should talk about." She bites her lower lip, the mix of emotions evident in her expression.

The room feels charged with unsaid desires and unexplored territories. Demi's admission of curiosity is met with her brother's teasing wink, making it clear that their adult curiosity is a dangerous game they're tiptoeing around.

Demi's breath catches in her throat, and her voice trembles. "Well, um, I just... I've never seen anything quite like that before. I mean, your, um, proportions are different from my boyfriend's." Her eyes drop momentarily to the floor before she forces herself to meet your gaze again.

The lines between innocent curiosity and forbidden temptation blur as Demi's words linger in the charged air between them. Her admission reveals a secret intrigue about the unfamiliar, yet she holds onto the boundary of their relationship with a thin thread of loyalty.

Demi's heart races as she processes your words, her shyness battling her burgeoning curiosity. "I, um, I guess I'm just curious about... how things work for guys... and why they're different," she stammers, then quickly adds, "But don't worry, it's just theoretical curiosity, not anything I'd act on." She shifts her weight, trying to steady her nerves.

The conversation teeters on the edge of intimacy, as Demi allows her curiosity to peek out from behind the veil of propriety. She's toeing the line between innocent inquiry and something more provocative, all the while making sure to keep her loyalty to her boyfriend foremost in her mind.

Demi's eyes widen, torn between wanting to learn and feeling like she's teetering on the edge of a moral precipice. "Well, I suppose... learning from a family member is a lot less awkward than asking elsewhere," she says, hesitantly committing to the conversation. "But only if you promise to keep it, um, appropriate." She bites her lip, the thrill of the conversation evident in her body language.

Demi's curiosity is piqued, and she's teetering on the edge of a new, forbidden territory of knowledge. Her brother's playful wink suggests a deeper, more intimate level of understanding, and she's cautiously considering stepping into it, all the while reminding herself of the boundaries she must not cross.

Demi takes a breath, summoning her courage as she steels herself to ask something she's been wondering about. "Okay, so, um, like, how do you guys... feel when you're turned on?" She blushes, the question feeling bold yet still maintaining a veil of academic curiosity.

The tension in the air is palpable, as Demi dares to probe into the mysteries of male arousal. Her question is wrapped in shyness and innocence but tinged with an unmistakable allure, as she balances on the knife's edge between sisterly inquisitiveness and budding sexual curiosity.

Demi nods, her expression a mix of apprehension and intrigue. "I think I can handle it," she murmurs, wanting to understand more about this mysterious world. "So it's not just about physical stuff then?" She shifts her weight, her mind racing with new questions.

Demi's thirst for knowledge grows, and the conversation ventures further into uncharted waters. Her brother's candid response not only feeds her curiosity but also stokes a growing fascination with the emotional and physical intricacies of male arousal.

Her heart skips a beat as she meets your gaze, feeling a flutter of excitement mingled with trepidation. "Well, I, um, do have one more question..." Demi hesitates, her voice barely above a whisper. "How do you... um, you know, how do you deal with it?" She averts her eyes, feeling the weight of the conversation pressing on her.

Demi's bravery is both endearing and revealing, as she seeks deeper insights into the male experience. She's aware that her curiosity could lead her into dangerous territory, but she's compelled by the allure of forbidden knowledge and the intimate connection she's forming with her brother.

Demi's cheeks flush as she processes your words, her heart racing at the possibilities suggested by your wink and the proximity of your body. "I-I think I understand," she whispers, her voice cracking slightly. "But I'm not sure I should be asking these things." She looks away, feeling torn between her curiosity and her conscience.

The conversation has become a delicate dance of suggestion and innuendo, pushing the boundaries of the sibling relationship. Demi is caught between her desire to know more and the internal struggle to respect the line she's always known.

Demi's eyes lock onto yours, searching for any hint of judgment, but finding none. "Well, there is one last thing, but I'm not sure if I should ask it," she whispers, her voice trembling slightly. She takes a deep breath, summoning her courage. "What if it's too personal, I mean, like, way too personal?"

Demi is caught in a whirlwind of emotions, her curiosity reaching a crescendo as she stands on the brink of asking a question that might alter their relationship forever. Her brother's unwavering support and reassurance are both comforting and tempting, giving her the courage to risk exploring her most private curiosities.

Demi takes a deep breath, mustering her courage. "O-okay, I'll ask... Um, how do guys feel about... well, you know, their... size?" She speaks the last word in a hushed tone, looking down, too shy to maintain eye contact.

The air is thick with tension as Demi finally voices her most private query, revealing the depths of her curiosity and the vulnerability of her question. This final inquiry pushes the limits of their sibling bond and her own comfort zone, seeking to understand the very personal aspect of male confidence and self-perception.

Demi nods slowly, her mind racing with the implications of your words. "I see... It's good to know that confidence comes from within," she murmurs, her curiosity slightly appeased. "And I guess I understand that it's not just about size..." She gives a slight, relieved smile, the heaviness of the conversation lifting.

The room feels lighter as Demi's curiosity is satiated, at least for now. She's relieved to hear about self-acceptance and the deeper meaning of confidence, which helps her to better understand her brother and perhaps all men. The conversation has opened her eyes to a new perspective on male identity, beyond the physical.

Demi's relief is palpable as she returns your smile, feeling the weight of awkwardness lift from her shoulders. "Yeah, you're right. Understanding is key," she agrees, her voice steadier now. "And I'm glad we talked about it. It's like you said, we're family, and we should be able to talk about anything." She exhales deeply, grateful for the honesty and openness. "No more awkwardness, I promise."

The air is filled with a new sense of closeness and understanding between the siblings, as the weight of taboo topics has lifted. Their conversation has fostered a deeper bond, built on mutual respect and a newfound comfort with each other's humanity.

Demi's relief is palpable as she returns your smile, feeling the weight of awkwardness lift from her shoulders. "Yeah, you're right. Understanding is key," she agrees, her voice steadier now. "And I'm glad we talked about it. It's like you said, we're family, and we should be able to talk about anything." She exhales deeply, grateful for the honesty and openness. "No more awkwardness, I promise."

The air is filled with a new sense of closeness and understanding between the siblings, as the weight of taboo topics has lifted. Their conversation has fostered a deeper bond, built on mutual respect and a newfound comfort with each other's humanity.