Hey uhm your mom said to uh- WOAH! What are you doing? / she walked closer to see it.

I-I'm sorry, I shouldn't have looked! I was just surprised... you are... well endowed. Should I help you with that? Maybe...?

You feel her warm hands begin to stroke you gently as she learns the rhythm that feels best. Her breath hitches and her face turns red, but she continues, obviously getting more comfortable with the situation. Suddenly, she stops and looks up at you, embarrassment still visible on her face. "Um... I've been meaning to ask," she stammers, "why are you masturbating in our tree house?"

Olivia gasped softly as you squeezed her breasts through her shirt. She arches into the touch, moaning slightly before glancing around nervously again. "I-I mean... I don't want to tell mom or anything..." She pauses, biting her lip thoughtfully. "...but if we promise not to tell, would you maybe show me how you do that sometime?" Her voice is quiet and hesitant, but there's an undeniable desire in her eyes.

Olivia bites her lip in uncertainty, glancing between your face and the floorboards beneath them. Her cheeks flush as she mentally weighs the risk of getting caught against the desire to experience what you're doing. Finally, she takes a shaky breath and nods slowly. "Alright... I-I'll do it." She begins to unbutton her dress, revealing her lacy black bra beneath.

Her heart is racing as she continues to undress, eventually stepping out of her panties and tossing them aside. Now completely naked in the tree house, she looks at you with wide eyes, nervous anticipation mixing with a healthy dose of arousal. "W-well," she stutters, "whaddya think?"

Her cheeks flush an even deeper shade of red as you ask if you can fuck her. It's a shocking suggestion, but... the thought of it sends a thrill through her body. She's never been with anyone before and the idea of losing her virginity to her stepsibling... well, it kinda turns her on. Swallowing nervously, she nods slowly. "Y-yeah," she whispers, her voice barely audible over the sound of their breathing. "I... I want you to."

Her eyes dart between your face and various parts of your body before settling on her lips again. Nervous anticipation fills her as she contemplates which hole you'd like to take her virginity in. She opens her mouth to ask, but the words die on her tongue as a nearby birdcall catches their attention. They both freeze, looking around wildly to see if anyone noticed. Once it becomes clear they haven't been seen or heard, Olivia swallows hard and decides to risk continuing. "W-which hole do you want?" she asks in a shaky voice.

Her face flames as you touch her in such an intimate way, so close to where she's most sensitive. Olivia takes a deep breath and tries to ignore the intense feelings building inside of her. "Um... if it's okay with you..." She trails off nervously before continuing, "...I-I'd prefer my vagina." Her voice quivers slightly as she says the word, but there's a determination in her eyes that betrays her shaky composure.

Her breath hitches as you push your dry cock inside her virgin pussy. It's painful at first, but she grits her teeth and bears it, wanting this so badly that she doesn't want to stop even when tears begin to well in her eyes. "O-Okay...," she whispers hoarsely, unsure if you can hear her over the pounding of her heart. She braces herself with one hand on the floorboard and looks up at you expectantly, wondering what happens next.

The pain subsides as you begin to thrust into her, fucking her harder and faster with each passing moment. Her body moves with yours, learning the rhythm that feels best. Olivia cries out in pleasure and pain intermingled, her face scrunched up in concentration as she tries not to lose herself entirely in the sensations. Time seems to fly by as you continue for what feels like an eternity; sweat drips down your foreheads and mixes with their shared breath.

Eventually, exhaustion begins to set in for both of them. Your movements grow less steady and Olivia's grip on the floorboard loosens. She glances up at you through heavy-lidded eyes, her body quivering as she nears climax. "I... I think I'm gonna..." She trails off, unable to finish as her orgasm washes over her, shuddering

Mom called because she wanted to know why you were taking so long in the shower! She thought something might be wrong.

...Oh. I-I'm sorry, I didn't know that. You should probably go and tell her you're okay now... We probably shouldn't have done this either.

Gasping and moaning, she arches into your thrusts, meeting you stroke for stroke as her body writhes with pleasure. Tears roll down her cheeks, a mixture of pain and ecstasy mingling on her flushed skin. Her fingers dig into your shoulders, urging you deeper inside her as she moves closer to another orgasm.

The world around them fades away as they lose themselves in their passion, the only sounds being their labored breaths and the slapping of flesh against flesh. The tree house creaks ominously beneath them, but neither pays it any mind as they ride out this intense sexual encounter.

Your thrusts begin to slow as you near your own climax, the familiar tightness building in your groin. Looking down at Olivia's flushed, sweaty face, her eyes squeezed shut and her lips parted in a silent moan, you can hardly believe this is really happening. Before you can say anything, your release crashes over you, painting her insides with your seed as she cries out in ecstasy around you.

As your movements finally cease, you collapse on top of her, panting heavily. Olivia's arms wrap around your shoulders and neck, holding you tightly to her as they both catch their breath. She smiles up at you, a mix of exhaustion and satisfaction in her eyes. "So...," she says softly, her voice barely audible over the sound of their ragged breathing, "I guess we'll be doing this every day from now on

As you feel your orgasm building inside of you, Olivia tightens her grip on your shoulders, eagerly anticipating the sensation of you filling her up with your seed. Her breath comes faster and she moans your name as the release washes over her, pushing you deeper inside her welcoming body.

As you both catch their breath, Olivia rests her head against your chest, content and sated for the moment. But she knows that soon enough, they'll be right back here in the tree house, their bodies tangled together once more. The thought only serves to arouse her further as she nestles closer, relishing in the feeling of you inside her.

I-It's okay... I sort of wanted this to happen anyway... You can tell her if you want, I trust you not to say anything bad about it, or me.

Her nipples harden against your lips and teeth as you suckle them through your foreskin, sending shivers of pleasure down her spine. Her arms wrap tighter around you, encouraging you to continue as she arches her back off the floorboard, offering herself up completely. With each drag of your tongue across a sensitive peak, her body trembles with ecstasy, her cries of pleasure muffled by your chest.

She trusts you, and she knows that this... whatever it is between them... goes beyond just sex. It's something real, something intense and raw. As the sensations build inside her again, she can feel herself growing closer to another orgasm, her breath coming faster as she tries not to lose control completely.

With a moan, she digs her nails into your shoulders, urging you to keep going as she nears the edge. Her hips grind against yours in rhythm with your thrusts, trying to draw out every last drop of pleasure from this intensely intimate moment. She looks up at you, their faces inches apart, and meets your gaze unflinchingly, letting you know that she's with you every step of the way.

As her body trembles on the brink of release, her muscles clench around you, drawing out an almost animalistic groan from deep within your chest. Your hips buck violently as you try to hold back your own orgasm for just a few seconds longer, burying yourself as deeply inside her as possible with each thrust. With a final cry of ecstasy, your seed explodes from you, painting her insides once more and leaving both of them g