Rainbow's Foalish Fantasy

Twilight and Rainbow were snuggling together on a large pile of cushions as they read a book that lay between them. It was already late at night, and they were lying next to a roaring fire, letting its warmth keep the winter cold at bay.

During their budding relationship, Rainbow had come to trust her marefriend implicitly. She had never known a special somepony as loving and understanding as Twilight before, and she absolutely loved that about her. Even though they told each other everything, there was still something that Rainbow had kept secret from her marefriend. She had always been hesitant to talk to Twilight about this particular fantasy of hers, but she now felt that hiding this part of her was wrong; her marefriend had a right to know what she was getting into.

“Twilight?” Rainbow softly asked as she closed the book, breaking Twilight’s concentration. “I… I have something to tell you, so just please hear me out...”

“Of course, Rainbow. What is it?” Twilight asked curiously as she gave her a reassuring nuzzle just under her cheek. She could tell that something heavy was on Rainbow’s mind just from the tone of her voice.

“There’s something I’ve kept secret from you, and I… I think you should know. I don’t want to hide this part of me anymore.” Rainbow looked at the fire as she took a deep breath, trying to calm her racing nerves.

“Umm, okay… What do you mean?”

“I want to… would it be okay if we...” She gulped, still a little hesitant to expose this side of her. While many others might have thought that this idea was on the stranger side of things, she still really wanted to try it out with somepony other than herself. “Umm...try something new?”

“Something new?” That caught Twilight’s attention. Her ears perked up attentively, genuinely interested in what she had to say. “What did you have in mind?”

“It’s, umm… Hehe, I–” Rainbow stuttered nervously. She had planned it all out so perfectly in her head, but now that she was actually about to admit her secret, she found herself at a loss for words. Rubbing the back of her head with a hoof, she giggled in nervous excitement as she glanced about the room, trying to put off the part where she would actually spill the beans.

Steeling her resolve, she took a deep breath and let it slowly. After telling Twilight that she wanted to try something new with her, she knew that she couldn’t back out now. Yes, she could make up a lie and try to weasel her way out of exposing her secret, but she could not, and would not, lie to her marefriend. If there was one thing she knew about relationships, it was that trust was the most important part. With that thought in mind, she looked Twilight dead in the eyes and said, albeit a little nervously, “I want to pretend I’m a foal, and have– have you take care of me.”

Twilight was taken aback, and she knew that she had to tread carefully. “Oh… umm, okay...” she said in what she hoped was a neutral voice, but it came out in a very negative manner.

Rainbow nodded silently, closing her eyes out of sheer nervousness as her body started to pump adrenaline through her veins. She had put herself out there, and now she was wondering if that had been such a good idea. As the silence crept on longer and longer, her nervousness grew. She didn’t dare look at Twilight, for fear of what her reaction might be.

Nearly a minute passed in silence before Rainbow came to a decision. “Look, I don’t know what you think of me now, but I’m just gonna get outta here.” She stood up to leave and ruffled her wings, preparing to fly back to her cloudhouse. “I understand if you don’t want to be my… my special somepony anymore…” she choked out as she cast her gaze off to the side, staring at the floor.

With a sudden flourish of her wings, Twilight quickly flew to Rainbow’s side. She pulled her into a tight hug and softly said, “Don’t you ever say things like that again, Rainbow… I don’t know what I’d do without you...”

Now it was Rainbow’s turn to be taken aback. She had expected Twilight to be nervous, maybe even a little freaked out, but certainly not all cool and accepting like she was now. She glanced up, letting a small, nervous smile pull her lips upward as her eyes connected with her marefriend’s. Twilight’s gaze was not one of incredulousness, but one of love and compassion, definitely not what she was expecting to see.

“Now, come on. Let’s go back to the cushions, and you can tell me all about this new and special side of you, alright?” Twilight asked in a soothing voice, making Rainbow feel a little bit more secure.

“O– Okay…”

They quietly walked back towards the cushions and sat back down. Still a little nervous, Rainbow started, “Well, umm… It’s just something that’s always been with me since I was little, ya know? Sometimes I like to, umm... act like a foal because it gives me a release from the world, letting me pretend like I don’t have any adult responsibilities.”

“Ahhh... okay, I think I see what you mean. So, you like the innocence that being a foal presents?”

Rainbow looked at Twilight suspiciously; that was exactly what she was trying to say. “Uh, yeah… yeah, pretty much.”

“Okay. So, umm… You know...do you, umm… Do you like to go all the way with it?”

“What do you mean, ‘all the way’?” Rainbow asked a little defensively. She couldn’t help it, but she still felt slightly wary about talking openly about her fetish, even if it was to the mare that she trusted the most. She shifted into a more comfortable position on the cushion and glanced back up at Twilight, waiting for her to respond.

“Well, to be blunt, do you wear diapers and, well… use them? Play around with foal toys? You know, those sorts of things?” Twilight asked nonchalantly. “To be honest, I know that there are two sides of this particular fetish: a diaper lover and an adult foal. I’m just curious to see which you are.”

“Well, uhh...yeah. I’m an… umm… adult foal.” Rainbow said in a soft voice. She cast her gaze to the side shamefully as she spoke, only to have Twilight’s hoof guide her to face her again.

“Rainbow, that’s nothing to be ashamed about.”

“Wha… what?” Rainbow met her marefriend’s gaze, relieved that she thought that way. “It’s not?”

“Of course not! And also, I think it’d be pretty fun to treat you like my foal for a day.”

“Wait, you actually want to treat me like a foal? You don’t think it’s weird?”

“Not at all! We all have our kinks, and being an adult foal is part of who you are, and I love you; nothing’s ever going to change that. I love you for who you are as a mare, and not just because you look dashingly stunning.” She giggled at her little pun, giving Rainbow a playful boop on the nose with a hoof. “Sorry, I couldn’t help myself,” she said as the two of them started laughing together.

Calming down a few moments later, Rainbow continued in a more serious tone, “Twilight, listen... if we’re gonna do this, I want to go all the way, and… there’s… there’s another thing.”

“Oh?”

“Can you… um… I’d like to try, if it’s possible…” She gulped loudly before continuing, nervous from what she was about to ask. ”breastfeeding, from you.”

“Well, uhh... I’m sure that there’s a spell in here somewhere that can help us with that,” Twilight replied with a small chuckle, glancing about the library as she thought of where she could find such a book. “That really shouldn’t be an issue, and I think it would add to the realism for you.”

“R–Really? You’d do that for me? For real?”

“Of course! If we’re going to do this, we’re going to do this the right way!” Twilight said reassuringly as she laid a wing over her trembling marefriend. Trying to calm her down, she pulled her closer and nuzzled her affectionately, all while rubbing her back with her wing. “And believe me, I want to do this for you; it’ll be fun!”

Feeling a bit tired, she levitated a thick blanket over them, letting loose a small yawn. Settling the blanket down on top of them, she continued, “Tell you what: while you take care of your weather duties tomorrow, I’ll use that time to get things ready for my new little foal.” She gave Rainbow a small nuzzle just under her neck, making her giggle slightly. “And once you finish your duties, you can bring all of your supplies over here around six, and you can spend the night with me as my new foal. That sound good?”

“That sounds great, Twi…” Snuggling closer to her, Rainbow gave her a loving kiss on the cheek. Closing her eyes to fall asleep, she couldn’t wait for tomorrow, giddy that she was finally going to live out one of her deepest fantasies.