Silent Sister

Marble and Limestone were lying in bed, both relaxing after their most recent bout of love making, Marble was cuddling up next to Limestone who was doing the traditional thing of having a post-sex cigarette. As Limestone took the cigarette out of her mouth and blew a couple of smoke rings, she turned to Marble and said "You wanna take the last drag?" Marble gave a nod and allowed Limestone to press the cigarette to her lips, she inhaled deeply and then blew the smoke out of her nose.

With a cheeky smile, Marble took the cigarette into her own hand and said "You want me to do that thing you like?"

Limestone looked at Marble with an expression on her face that seemed to be a mixture of indifference and admiration before letting out a small chuckle and saying "Sure, why not? I am feeling just a little too content right now, it'll make me feel alive", Marble grinned wickedly and put out the cigarette by pressing the last few dying embers right onto Limestone's left nipple. Limestone let out a grunt as the heat of the cigarette sizzled her skin slightly and sent a small pained sensation through her breast, as Marble discarded the cigarette Limestone let out a breath, her pussy somehow becoming wetter than it already was from the sex she and her sister had just engaged in. Limestone got out of bed with a yawn and said "Hey I'm heading to the fridge for a beer, you want anything?"

Marble just smiled and said "Yeah, you back here as soon as possible"

Limestone just rolled her eyes, she hated how soppy and romantic Marble sometimes got, it made it feel like the dynamic between them was an actual relationship rather than a regular relationship, the difference being that an actual relationship was something that everyone knew about and acknowledged while their "regular" relationship was something they kept hidden from everyone. They knew incest wasn't illegal but they couldn't exactly imagine their mom being jazzed about the whole thing and if one person can't know then it's best not to let anyone know even if they suspected it, otherwise they might spill the beans and fuck everything up. Limestone hated to admit it but she had grown rather attached to her sister and didn't want to risk losing the connection they had by having their mom finding out and possibly separating them, she sighed as she opened the fridge, she wished it didn't have to be a secret, especially considering they still lived on the rock farm while Pinkie and Maud had been able to ditch the family to focus on their own pursuits.

As Limestone grabbed a can and cracked it open she returned to the bedroom to find Marble asleep, she glugged down a couple of mouthfuls of beer and set the can aside before she got back in the bed and simply stared at her younger sister, it seemed only yesterday that they had gone beyond the boundaries of sisterly love.