The sun was setting in the horizon, turning the sky orange and purple, and as soon as she saw it, Zipp knew what it meant; it was almost time.

According to a text from Izzy, Pipp was currently on route towards the Brighthouse and getting closer. While she knew she had plenty of time to get everything set up, Zipp felt herself scrambling to make sure every decoration was in its proper place. Usually, this wasn't like her, but tonight was special. Tonight was the night she would propose to Pipp.

Now she knew Pipp was the kind of pony who would enjoy a public proposal, being the attention loving pony that she was. But because of the clandestine nature of their relationship, this proposal had to be private, which was alright with her.

In-between two comfy seats she set down a vase of flowers and a spread that included all of Pipp's favorite foods, all set in front of the fireplace, which gave the dark room a nice warm glow. After a moment of thinking, she quickly flew off and came back with a karaoke machine.

"Ok, got the food, the seats, the flowers, the music, the ambience… I think." Zipp muttered to herself. "Oh! Scented candles!"

The white pegasus flew off again and came back with two scented candles in her hooves, both already lit and set high places to increase the room's warm glow. Zipp wiped her brow as she floated back down.

"Whew! Done! Ok, everything's ready and looking great, just gotta remember what to say when the time comes," she told herself, now growing increasingly nervous. "No big deal… you're just proposing to your own sister, who's also the love of your life and who also has the cutest rump you've ever seen. What could go wrong? Other than everything that is… Oh… What if she doesn't like it…?"

"I'm sure she'll love it."

Startled, Zipp spun around with a yelp and found Sunny standing nearby.

"Sunny!" Zipp cried.

"Oh! Sorry, didn't mean to scare you. I just followed the scent of the candles and saw how lovely everything looked." Sunny expressed. "You really went all out, huh?"

"All out? All out with what?" Zipp asked as she started to sweat with a nervous smile. "It-It-It's nothing! Really! Just something… something Pipp asked me to do! Yeah! Just doing what she told me to do! Not-Not doing anything like…"

"Proposing to Pipp?" Sunny inquired suggestively.

Zipp's sweating increased. "Uh… uh…!"

"Relax Zipp! It's ok. I know you and Pipp are dating." Sunny said.

"I… I…" Zipp began to panic.

"Zipp, come on. Look, I know we all agreed that we'd pretend nothing was going on when we knew something was going on, but I think we can all agree that it's not exactly a well kept secret." Pipp pointed out. "I mean… me and Pipp have walked on you both… a couple of times. Then there's all those times you kissed and nuzzled each other with us watching…"

"Oh… Right…" Zipp slowly said in embarrassment. Both she and Pipp had just been so happy lately they didn't give anypony else much thought, they didn't care if they're friends saw them or if anypony else did. All they wanted was to be near each other and touch each other, so keeping their secret a secret was harder than expected.

"Come on, Pipp. Just tell me. You know I accept you both and that I'll keep it a secret. No matter what, you two will always be my friends." Sunny expressed sincerely.

Zipp saw the look in Sunny's eyes, her smile, how much she seemed to shine, and she knew that she could trust her. She'd trust Sunny with her life, so she could obviously trust her with the full truth.

The eldest princess sighed. "Alright. I admit it. Me and Pipp are dating and I'm planning to propose to her tonight."

"Aw, that's so sweet!" Sunny cooed. "And don't worry, I'm sure she'll say yes. Oh, and while Hitch still has his suspicions he isn't looking into it. He still knows as much about it now as he did when he had that meeting."

"That's good. Should probably keep it that way." Zipp noted.

"Yeah. Guess that means he won't be invited to the wedding." Sunny remarked, a little sad.

"Well… if he wore a blindfold and earplugs he could." Zipp pointed out.

"Oh, right!" Sunny realized.

"Course that's only if she says 'yes'."

"And she will."

"If you say so."

"I know so."

Zipp smiled. "Thanks, Sunny," she said. She then got an alert on her phone and widened her eyes when she checked it. "Oh horse apples! Pipp's almost here!"

"Oh! Guess that's my cue!" The earth pony realized. "Don't worry, I'll make sure Hitch doesn't come near the Brighthouse."

"Thanks again, Sunny!" The pegasus said as her friend started to gallop away.

"Good luck, Zipp!" she said as she left.

Zipp sighed deeply before she went over to make some last minute fixes and additions, such as putting glasses near their seats and filling them with their favorite drinks, both made by Sunny. Normally she didn't care if things were perfect or not, but given that this was a proposal, she felt it needed to be.

By the time she made one small adjustment, she heard a door opening.

"Honey, I'm home!"

"Hey, Pipp! Come on over!"

Zipp's smile grew as she saw Pipp get closer and finally enter the room.

The younger princess gasped in awe upon gazing around the decorated room. Her eyes lit up when she saw the food, her interest peaked when she saw the karaoke machine and the flowers made the smile on her face grow wider.

"Oh. My. Glam! All my favorite foods! And my favorite kind of flowers?" Pipp remarked in amazement. She sniffed the air and caught a whiff of a familiar smell. "And is that.. Lavender?"

"Sure is." Zipp confirmed as she came closer. "You can thank the scented candles for that."

"Oh! I love lavender! You must have really worked hard on this!" Pipp commented, impressed.

"You bet your cute tush I did." Zipp flirted with a wink that made Pipp giggle. "Speaking of your tush, why don't you plant it down on that cushion and we can get things started. Gotcha your favorite drink too."

Zipp took Pipp's hoof and led her over to the seats in front of the fireplace. Pipp sat her rump down on the cushion that were, according to her sister/lover, plush but not as plush as her bottom. Zipp sat down on the cushion in front of Pipp, who quickly drank from her glass and moaned in satisfaction. "Mmm! Fruity colada? Are we celebrating? What are we celebrating?"

"For one thing…" Zipp began, adopting a suave tone as she reached over to touch her sister/girlfriend's cheek with her hoof. "An empty Brighthouse."

"Ooh! Thinking of doing something naughty?" An interested Pipp asked suggestively, her brows wiggling a little bit.

Zipp laughed a little. "Soon, first I'd like to enjoy the food," she said as she lowered her hoof.

Pipp nodded. "Right. That way we'll have more energy," she agreed as she started to eat alongside Zipp.

"Then afterwards… I was thinking of… maybe… singing a song for you." Zipp revealed.

The younger sister gasped. "You wanna sing for me?" she repeated in shock. "Well, that explains the karaoke machine. But… But you said you hated karaoke."

"Yeah… But I do love you." Zipp smiled in a way that made Pipp's heart flutter.

"Well, I can't wait to hear it." Pipp expressed warmly. "And I just know I'm gonna love it. After all, it's gonna be sung by you and I love you."

"Charmer." Zipp smirked. She took a piece of food with a fork and waved it around in front of Pipp. "Now come on, say 'ah!'"

Pipp smiled an angelic smile and opened her mouth as she allowed Zipp to feed her. "My turn!" she said as she stabbed another piece of food with her own fork and offered it to Pipp. "Say 'ah!' Zipp!"

Zipp chuckled and gave in as she opened her mouth, she closed it after Pipp put the food in her mouth.

After Pipp slowly pulls the fork out of the mouth of her sister, who licks her lips with a satisfied moan, Pipp sticks the empty fork in her own mouth with an even louder moan of satisfaction.

"Yes!" she said in a sing-song voice. "An indirect kiss from Zipp!"

Zipp laughed a little, even after being in a relationship for weeks and fooling around all over, the fact that Pipp could still get excited about stuff like an indirect kiss just made her more endearing.

"So… anything new lately?" Zipp inquired, trying to make small talk.

"Oh, not much. Mane Melody's doing good though." Pipp replied.

Zipp nodded. "Well that's good."

"Also… a little while ago, I went to Zephyr Heights to pay Mom a visit and… she told me some… interesting things." The younger pony revealed slowly.

The white pegasus froze briefly while she ate, but still closed her mouth around the piece of food on her fork and swallowed it. She had a general idea of what their Mom had told Pipp, it was something she was told herself a week or two ago, which was also how long it took for her to come up with this proposal plan.

Even though she had an idea of what their mother told her, she felt she should ask anyone just to be sure.

"So… what'd she tell you?" she inquired.

"You know… about Dad." Pipp said, confirming her suspicions.

"Oh. Yeah. I-I thought so." Zipp nodded. "How are you doing?"

"Ok. I mean… I can't say I wasn't… surprised, but… it doesn't change how much I love Dad, or how much I miss him." Pipp expressed with a sad smile.

Zipp nodded. "Yeah, I know. I feel the same,"

"I'm betting Dad would also be a little… shocked… by us, but at the same time I think he'd understand." Pipp said.

"I think so too." Zipp agreed. "And so does Mom."

"Yeah. I guess we're more like him than we thought." Pipp mused.

"With a few differences." Her older sister pointed out. "One being that I would never cheat on you."

"Likewise."

"I mean it, you're irreplaceable to me, Pipp. I don't want to lose you to anypony else. Now that we've told each other how we feel, now that we've expressed just how much we love each other. I'm never gonna let you go."

"Oh, Zipp…"

The two shared a kiss before they resumed eating.

Shortly after they finished eating dinner and had dessert, Zipp turned on the karaoke machine and grabbed the microphone before flying up. Pipp looked up at her sister/lover with big, loving and expecting eyes.

"Ok, so… I haven't really rehearsed this too-too much, and as you know… my voice is a little pitchy… So…" Zipp began to say, starting to sound nervous.

"Zipp. Zipp!" Pipp spoke up, stopping her sister from rambling. She gave her a reassuring smile. "I'm sure you'll be fine. Just… play from the heart, like I do."

"Play from the heart… Ok, I can do that." Zipp said, sounding more confident.

"Great!" Pipp beamed happily.

Zipp cleared her throat before she began singing.

In the realm of my mind, there's a cherished memory,

Of a beloved sister, a beacon of grace and harmony.

With a spirit so pure, she illuminates the darkest night,

Her love's like a river, flowing with endless insight.

Oh, sister of serenity, your kindness knows no end,

You lift me up, my dearest friend.

Through highs and lows, you're always there,

A guiding light, beyond compare.

Through foalhood days and youthful dreams we'd chase,

You always had a smile, a warmth that couldn't be misplaced.

We shared laughter, tears, and secrets never known,

A bond inseparable, a sisterhood we've always owned.

Oh, sister of serenity, your kindness knows no end,

You lift me up, my dearest friend.

Through highs and lows, you're always there,

A guiding light, beyond compare.

Life's journey took us on separate roads,

But the love we share, oh, it still explodes.

No matter the distance, the time or the space,

The connection we have, it can never be erased.

In the hardest of times, when the world seems so gray,

You hold my hand, remind me it'll all be okay.

With every verse I write, with every lyric sung,

I dedicate this song to a sister's love, forever young.

Oh, sister of serenity, your kindness knows no end,

You lift me up, my dearest friend.

Through highs and lows, you're always there,

A guiding light, beyond compare.

Oh, sister of serenity, this song is for you,

A melody of gratitude, so pure and true.

With every note I play, I'll honor your name,

Forever grateful, for the love we proclaim.

By the time she finished, Zipp saw that her little sister and secret girlfriend was crying tears of pure joy, all with a huge smile on her face.

"So… did you like it?" Zipp inquired hopefully.

Pipp didn't answer. She just flew up, still smiling and joyfully crying, gently took hold of her sister's face with both hooves and pressed her lips firmly against hers. They stayed like that for a while, letting their tongues swirl around each other before finally pulling away, with a string of saliva connecting them.

"That was beautiful." The younger sister expressed in a loving tone.

Zipp chuckled with a blush. "Really."

"For realises." Pipp confirmed. "Oh, I would, like, love, to sing that song together with you. Hey, how do you feel about… duets?"

The older sister smirked in amusement. "Nice try, sis. Not gonna happen."

Pipp shrugged. "Eh, worth a shot."

"There is one thing I would say 'yes' to though." Zipp admitted. It was then that she started to get butterflies in her stomach. It was almost time.

"Oh?" Pipp asked as they started to float back down. "And what's that?"

"Well, to be honest… it's also something I'd like you to say 'yes' to as well." Zipp continued a little more bashfully as their hooves touched the ground.

"Whatever it is, of course I'll say 'yes'." Pipp assured her.

"I hope because l…" Zipp began to say as the butterflies in her stomach grew more intense. This was it. She took a breath before staring at Pipp adoration. "Pipp… as you know, we've been dating and having sex for a while now and… every time I get a glimpse of your rump, it reminds me of how it all started. Not to mention… turns me on."

Pipp giggled and blushed, her face now as red as Zipp's now was. "Likewise," she confessed.

"Thanks. I meant it earlier, you know. When I said you were irreplaceable to me, and you are. I wanna spend the rest of my life with you Pipp. I don't want to be with anypony else but you. And one day, when I do become Queen, I wanna rule right alongside you." Zipp expressed.

"Zipp…" Pipp said, already starting to cry.

"I even wanna fulfill Mom's dream of continuing the royal line. You know, as in… somehow… someday… starting a family." The white pegasus continued.

Pipp gasped softly. "A family?" she repeated. Just imagining herself carrying and raising a child alongside her own sister filled her heart with such joy, and also made her naughty bits twitch a little.

"Yeah, but I gotta ask you one thing first." Zipp began before taking a deep breath and exhaling. This was it. As she began to bend down on one hoof, Pipp's eyes widened more and more. She stared up at Pipp with a warm smile and eyes filled with hope. "Pipp Petals, will you marry me?"

Pipp wasted zero time responding. "Yes! Yes! Of course, yes!" she exclaimed excitedly before she tackled Zipp into a hug and kissed her all over her face. She especially kissed her lips, a gesture Zipp returned.

Over and over, Zipp and Pipp pressed their lips against each other. Zipp's tongue pushed its way into Pipp's mouth and soon enough, both her tongue and Pipp's intertwined, making wet smacking sounds.

At first, their front legs were wrapped around each other, then Zipp moved one of her hooves down Pipp's back before placing it on top of her sister's cutie mark. Slowly, she moved her hoof around in circles, kneading and massaging Pipp's coat and making her moan.

Eventually, they pulled their lips away from each other and stared into each other's eyes, a string of saliva connecting their mouths. It only took a second before they were back to swapping spit and letting their tongues dance around each other.

Pipp soon went from kissing Zipp to sucking on and licking her neck, during which her rump hung in the air. As she laid on her back, Zipp admired the soft and round body part her sister unintentionally wiggled in the air before dropping it down on her crotch hard and fast enough to make her grunt.

Eventually, Zipp made them spin around. Now she was on top and Pipp was the bottom. She copied the same actions Pipp did to her neck not too long ago, coating it with saliva and hickies and hoping she was doing it right, though based on the moans coming from Pipp she had a feeling she was.

As Zipp continued licking her neck, Pipp gazed down towards her sister/lover's butt across from her. Whenever they had sex, it always looked even cuter then it usually did. She adored how soft and lean it was, how it possessed just enough fat to make it jiggle when it was spanked. As she stared at it, she slowly licked her lips with a mischievous grin.

She reached down, put her hoof on her sister's cutie mark and massaged her flank, inciting more moans from her new fiancée. Pipp rubbed Zipp's bottom some more and made it jiggle before giving it a spank.

The sudden attack on her rump made Zipp squeak a little. Her cheeks became red with embarrassment and pleasure. She moaned even louder when Pipp spanked her again.

Before she knew it, Pipp made the two of them stand up before leading her away. Pipp sat down on the nearest chair she could find, laid Zipp across her lap and resumed spanking her. Zipp cried out and moaned each time while her little sister tanned her backside red.

"Ooh… Hurts so good…!" Zipp moaned with a smile. This kind of foreplay was always her favorite, Pipp's as well.

Sometimes it was her doing the spanking, and sometimes it was Pipp. Sometimes they spanked each for minor or major things, and other times, like now, they did it for the fun of it. Both agreed that they may or may not be masochists deep down. Eventually, Pipp stopped once her sister/fiancée's rump was a delightful shade of red.

"Alright, now let's kiss… with our other lips." Pipp grinned, making Zipp grin back at her.

After Zipp got off Pipp's lap and Pipp got off the chair, the two sisters made their way back to their original spot and sat down in front of each other. As they turned onto their sides, Zipp slid her right back leg under Pipp's left leg and let them intertwine. The two scooted closer to press their crotches together, causing them to gasp in unison.

They quickly started to moan loudly as they began to grind their special spots together. In order to make the scissor position they were in more enjoyable, they silently agreed that they had to work together. Their pelvic thrusts slowly became faster and more wet sounding. Every time their crotches crashed together, pleasure shot their bodies like a lightning bolt.

Even though they were sisters, even though they were family, a fact that further aroused them, this latest sexual act made them feel more connected than ever before.

As the two rubbed their crotches together and their hip movements became more frantic, the wet and sloppy sound they generated grew louder

Pleasure flooded their brains, and shivers ran down both their spines as they thrusted their pelvises into each other even harder.

"Oh Pipp… keep going, sis!" Zipp moaned while steadying their rhythm.

"Like, back at ya!" Pipp responded, completely lost in pleasure.

"Can you imagine it now? You wearing a poofy wedding dress?" Zipp inquired.

"Yes!"

"Me as the groom?"

"Yes!"

"Enjoying our honeymoon together? Finding a way to start a family even though we're both sisters?"

"Yes!"

Zipp held out her hoof to Pipp, who used as much strength as she could to move her hoof closer and press it against Zipp's. She matched Zipp's pace as her pelvic thrusts increased in speed. This was really gonna send them over.

"Zipp! Zipp, I'm about to…!"

"I know! I know, me too! Let's do it together!"

"I love you, Zipp!" Pipp cried

"I love you too, Pipp!" Zipp said loudly in response.

The two sisters/fiancée's both screamed to the heavens as they reached their limits before collapsing on their backs. Both breathed heavily and felt like they were melting given how much they were sweating. Slowly, they raised their hands up to look at each other and smile.

Pipp quickly sniffed the area under her left front leg and gagged. "Whew! I reek!" she commented before getting up and trotting away. "I'm gonna go take a shower."

"Ok… That's cool…" Zipp sighed in exhaustion.

The younger sister stopped and turned to lover. "You're gonna join me," she told her. Those four words made Zipp's heart skip a beat, especially the flirtatious wink and the little booty wiggle gave her.

Zipp quickly sat up. "Even better!" she said, fully energized as she got up and trotted after her fiancée and future wife.