Purity

I'm curious, how many people can honestly say they've been given a blowjob by a girl while their girlfriend watches? Now, how many people when you add in the factor that the girl blowing me is my sister? Then, how many when you consider my girlfriend is also my sister? Alright, statistically it's more likely when you factor in certain parts of the USA, but in the grand scheme of things that's not that many.

Poppy watches with eager eyes as Rosie's head bobs up and down on my dick, as if studying the phenomenon in front of her, but her flushed face betrays the fact that her interest is more than academic. Rosie seems more than happy to display her slutty side, switching her gaze between me and Poppy, even daring to stroke Poppy's knee on occasion.

"You're definitely getting better at this, are you trying to show off?" I ask Rosie, but I only receive a muffled chuckle in response. Seems like she doesn't want to take her mouth off my dick, which I'm definitely not gonna complain about.

Poppy grabs my attention by unbuttoning her jeans, just like yesterday, she reaches her hand inside as she watches us. "Does it feel good?" She asks me as she begins moving her hand in a motion hidden by her jeans.

I smile at Poppy's efforts, she may not be ready to get involved, but she's clearly trying her best. "It feels great, Pops... And I think she enjoys doing it too." I answer, placing my hand on the back of Rosie's head, who grunts in agreement. "If she keeps this up, I'm gonna come pretty soon." I admit.

All of a sudden, Rosie breaks off her ****, obviously having different ideas. "Not yet, I need a cock in me." She demands, dropping her robe to reveal her naked form, before climbing on top of me. "Watch this, Poppy, learn from the best." She adds as she impales herself on my penis, groaning as it enters here.

Rosie's as tight as I remember, but she's definitely less nervous. She rides me like an expert, shifting her hips as she milks my dick. I slide my hands along her body, reaching up to her gorgeous tits, massaging them gently. Rosie's moans are all the confirmation I need that it feels good, I guess all the attention from Marie has been good for her sensitivity, every touch seems to send her wild.

"Oh my God... Fuck, Rufus... Your dick feels amazing, big brother. Come inside me, fill your slutty sister." Rosie pleads, before shaking herself to her climax. That was fast, I guess she really was craving cock... Which make me not want to finish just yet.

Instead, I move her off of me, and put her on her hands and knees facing Poppy. "Why would I come? We're supposed to be showing Poppy a good time, aren't we?" I smirk, lining myself up behind her. It's clear Rosie prefers to take it from behind, so this should drive her wild.

I thrust back inside my sister, causing her to emit a guttural moan, mere inches away from Poppy, who seems to be enjoying the sight too, based on the rapidity of movement from her wrist. Rosie moans and pants... Unable to hold back the dirty words flowing from her mouth.

"Fuck, fuck, fuck, fuck... It feels so good Pops, so good, so good... I'm gonna come again." She confesses as she screeches to her second orgasm, her entire body trembling. I have to hold her hips to prevent her legs from giving out. Even after it subsides, I keep pounding Rosie, keeping an eye on Poppy's reaction the whole time, especially after Rosie's next request. "Oh Fuck... Poppy... Put your fingers in my mouth... I want to taste you."

I'm uncertain how Poppy is going to react, but then she doesn't seem sure either. "You want to taste your little sister's pussy?" She finally asks, in a much dirtier voice than I ever expected to hear from her. "You're such a whore that you even want to fuck your straight sister?"

Rosie's cunt tightens with each question, as she nods maniacally. I spot a slight smile on Poppy's face, she seems to enjoy this role. To my surprise, she does remove her hand from her knickers, revealing a glistening sheen on her fingers, which she then places in Rosie's mouth. The result is immediate, as I feel her clamp down on my dick harder than ever, erupting in a bone-rattling orgasm.

It's so intense that it brings me to the point of coming myself as Poppy returns her hand to her underwear, when suddenly, Rosie pulls me out of her twat and swiftly returns to sucking me off. I can't take the time to question it, as my sperm explodes into my sister's mouth. Rosie dutifully accepts all of it, until I relax on the sofa, at which point she turns to Poppy, before moving her mouth to our sister's.

I'm caught off guard by the sudden kiss, and then I realise it isn't just a kiss, Rosie's passing my semen into Poppy's mouth. Poppy can't seem to contain herself at this new taste, and moans into Rosie's mouth as she violently shakes and spasms, experiencing an orgasm of her own.

Rosie ends the kiss, before leaving another on Poppy's forehead. "There you go, now you know what it tastes like." She reassures her, as I notice Poppy gulp, swallowing my seed. "It's good, isn't it?"

Poppy simply nods meekly, to which Rosie throws her arms around her, providing a big reassuring hug. "You guys are the best siblings I could ask for." Poppy sighs happily, returning the hug to Rosie.

I reach down and pick up Rosie's robe, offering it back to her, who takes it back from me. "That was intense, everything okay?" I ask.

Rosie just snorts at my concerns. "I know you're being caring, but that was pretty mild for my tastes, Poppy didn't even slap me or grab my hair or anything." She answers. Rosie has a diabolical mind, she truly is the next level of deranged, lucky I love her the way she is, really.

"I'll remember for next time." Poppy giggles. "Maybe then... I can try using my mouth more too." She thinks aloud, causing me and Rosie to grin at each other. Now I can't wait for the next time.