Scootaloo's Rainbow

Rainbow Dash woke to find Scootaloo’s sleeping form pressed into her chest. The young filly snored sofly, the only noise in the otherwise silent room. The wonderful pleasures of the previous night whirled through the mare’s mind, and through it all, one question slowly calcified in her brain.

“What have I done?”

The smell of hay bacon cooking in the next room made Scootaloo’s eyes flutter open. For a moment, she didn’t remember where she was, but when she saw the large, empty bed in front of her felt the sticky aftermath between her legs, a massive grin formed on her face. She was at Rainbow’s! More than that, she and Rainbow had done...something the previous night that had felt amazing and so very intimate. The filly’s heart fluttered with joy and love for her adoptive sister as she hopped out of bed, her wings buzzing softly. Rainbow Dash had let her sleep in, but she didn’t want to miss out on any time they could spend together.

The older mare was waiting for her as she stepped out into the kitchen. Scootaloo was rubbing sleep from her eyes as she watched Rainbow work. The mare looked over her shoulder at the younger filly, a strangely nervous smile on her face.

“Hey, Squirt. Finally awake?”

“Yeah,” Scootaloo replied with a yawn. “Do I have time for a shower? I feel kinda sticky from last night.” Several patches of Scootaloo’s fur were matted down and stuck to her skin. It felt weird, but just thinking of how it got that way sent delight shooting through the filly’s thoughts. Rainbow seemed to tense slightly in response, but she was still smiling, so Scootaloo figured she must have accidentally said something rude. Rainbow spoke up before the filly could apologize for the possible slight.

“Oh, you have time. Get yourself cleaned up, and we can eat after.” The filly yawned while nodding her reply, groggily making her way back down the hall to the shower by Rainbow’s bedroom.

‘She looks so cute the morning after!’ Rainbow shook her head furiously, trying to banish the thought. This had been a mistake. Scootaloo was still a filly, a cutie mark didn’t change that.
‘But she’s into you, and she has the cutest little ass.’ What would happen if Twilight found out…, if anypony found out. Sure, this had been something Rainbow had wanted to do for quite a while, she had always found the young ones cute, and there was no denying that she had been thinking of doing it with Scootaloo ever since learning the filly idealized her. However, that didn’t excuse any of this. She could go to the dungeons if this was found out. ‘Those little moans last night were worth any risk.’

The sounds of the shower in the other room went silent, and Rainbow knew she would need to face her little sister soon. ‘Sisters don’t do what we just did. We’re so much more than that; we always were.’ She tried to shut the voice in her head off. That was just the lust talking, not the sensible side of herself that she really needed right now...right? This was a mistake...wasn’t it? It hadn’t hurt Scootaloo though. In fact, as the filly walked back into the room, fur and mane still damp, she had the widest grin on her face that Rainbow had ever seen on her. Maybe it would be ok. Maybe Scootaloo really was mature enough for this. Either way, there were some things that needed to be addressed.

The table was all set, with food laid out for both of them. Scootaloo’s stomach was absolutely growling by the time she sat herself down, but the look on Rainbow’s face was finally starting to worry her. The smile was too obviously fake.

“Rainbow...are you feeling ok?”

“Yeah, it’s just…,” The older mare was seated now too, and shoved half a slice of toast in her mouth, crumbs falling onto her lap as she kept talking, her eyes barely meeting Scootaloo in a few brief glances. “We need to talk…about what happened last night.” She said, passing a glass of orange juice to the filly.

“Oh, that? That was amazing! You said it was going to feel amazing and it did! I mean, at first it was a little weird, but then there was something that just built up, and then boom!” Scootaloo knew she was rambling, but she was still high on the excitement.

“I know, I know it was really good. It was amazing for me too. In fact, I don’t think I’ve ever had that much fun in my life.” Rainbow replied, the filly across from her loudly squeeing in joy hearing that her idol had enjoyed it so much. However, things needed to be said.” Scootaloo, what we did last night was…, not everypony would understand it.”

“I know. You said the other night that ponies would think I was too young.”

‘You are too young.’ The mare thought to herself. “Yes, and I could get into some trouble if the wrong ponies hear about what happened. So, you can’t tell anypony. Not Twilight, not your aunts, not your friends.”

“I understand. Actually…,” The filly’s face flushed red, “I wouldn’t anyway. It feels like it would be really...embarrassing. That felt good, but it was also a bit weird, right?”

“Right. I’m glad you understand.”

“I understand, one hundred percent. A secret between sisters….” The filly took a swig of orange juice, some of it running down her chin. Rainbow had to fight back the voice in her head again as it told her to lick the filly clean. When Scootaloo had placed the glass down, she looked up at Rainbow, a look on her face that was almost pleading. “So…. Can we do it again?” Rainbow tensed, knowing that was coming. The filly’s beaming smile and the giddy candor of her bouncing gait when she’d first walked in had made it clear. It hadn’t made thinking of a response any easier. ‘She’s already eager for more. She’s a natural. She could be a perfect little mare muncher with a few repeat performances…’

“Not today.” Rainbow said. It may never happen again. It wouldn’t, if the mare was smart. ‘Look at her though.’ The thoughts in her head were insistent. ‘You would love to see that cute muzzle buried in your crotch again.’

“Why not?” The filly asked, the disappointment naked on her face.

“You need to go back to your aunts’ soon, and there will be questions if you go back smelling like sweat and cum.” The mare said, half lying. It was true that it was probably a bad idea for them to have sex right before sending the filly home, but there were ways to get away with it. ‘I have always liked shower sex.’ Rainbow needed more time to think, to decide how to handle this. Maybe it would be smart to just pretend this never happened, or at least to be very, very careful in the future. ‘Alternatively, you have a filly half your age that worships the ground you walk on. You could have that tasty little foal butt any time you wanted.’ SHUT UP!

“Are you sure you’re ok?” Scootaloo asked, and Rainbow realized she had grimaced outwardly.

“I’m fine, really. I just have a lot on my mind.”

“Oh, ok. It’s too bad we can’t do that ‘sex’ thing again today. It really did feel amazing.. Hey, maybe we can do it again the next time I’m over.”

“...Maybe.” The mare replied, not even sure for herself whether she really wanted that or not. Soon, the breakfast was done, and their conversation moved on to other more innocent things. They talked about school, homework, the cutie mark crusaders, the weather, anything to help preoccupy her mind from the mental conflict waging inside. Not long after that, Rainbow was flying Scootaloo down to the surface, and after some hugs and brief goodbyes and thank yous, she was alone in her house again. No fawning fillies to admire and enrapture. No friends to entertain or prank. Just only herself and her thoughts. Rainbow Dash gave a low sigh and returned to her room. The strong smell of sex filled her bedroom. Images and sounds of the previous night flooded her mind again, and before she even realized what she was doing, her hoof was between her legs. Back pressed against the side of her bed, Rainbow moaned quietly into the empty house, the sound of Scootaloo’s desperate gasping ringing in head. For a moment, there was no regret, no fear of what was to come. For a moment.

The mare’s rationality returned to her. What was she doing!?

“Stupid! Stupid!” She yanked away her hoof, wet with her desire and wiped it down on some of the clouds around her, the poofiness making the action difficult. Rainbow Dash was a Wonderbolt now, if only a reservist. Her career was finally taking off, her future spread out in front of her, and she had risked all of that for a few moments of pleasure with a filly that looked up to her. She had taken advantage of Scootaloo’s hero worship, and she may have ruined her own life. ‘Only if somepony finds out. Besides, Scootaloo clearly enjoyed it.’ That kind of thinking would ruin her. ‘This kind of thinking will let you have everything you ever wanted. Scootaloo is trustworthy, she won’t tell a soul. You can be a Wonderbolt, and have your little foal to fuck too.’

Rainbow buried her head in the side of her bed. What in Tartarus was she going to do now?