Basic plot: after Rainbow Dash sees Applejack and Rarity together, she confronts her about it and storms off, without hearing the full story.

......

Rainbow Dash could not believe her eyes. Her date was dancing with someone else. Heck, her date wasn't even supposed to be here!

At first, Rainbow felt sad. How could Applejack do this to her? Didn't Applejack always nag her about "always telling her the truth"? Why had Applejack lied to her? If she wanted to go with Rarity instead of her, why hadn't she said anything? But now Rainbow felt angry. Why had Applejack lied?

"R-Rainbow?" Fluttershy snapped Rainbow out of her trance.

Without another word, Rainbow stormed over to the couple. The two girls saw her and their eyes widened.

"How could you?!" Rainbow Dash snapped angrily.

"D-Dash? What are ya doin' here?" Applejack asked in confusion. "Ah thought ya were-"

"What am I doing here?! You lied to me!" Rainbow hissed, just about holding her tears back.

"What are ya talkin' about?" Applejack asked, her brows knitted together in confusion.

"You! You told me you were ill! You don't look very ill to me!" Rainbow said, crossing her arms. "If you didn't wanna go with me, you could have just told me!" She felt her tears start to form and decided to get out of there - and fast.

Applejack opened her mouth to speak, but before she could, Rainbow Dash, using her necklace, dashed away as fast as she could.

......

Rainbow Dash growled angrily, swiping the tears away as she hid in the girls' toilets, locked in one of the stalls. She was supposed to be tough, so why was she getting so worked up over someone who lied to her? It made no sense. Applejack, the most honest and dependable of the group, lied. She wanted answers, but she was in no state to be going anywhere.

She heard voices from outside the door getting closer. She couldn't quite make out what they were saying until the door opened.

"Ah jus' can't believe ya took my phone!" Dash recognised Applejack's angry voice.

"It was just a bit of jealousy! It was in the heat of the moment, I suppose!" Then she recognised Rarity's voice.

"Dashie? Are you in here?" Fluttershy asked timidly.

The three girls spied the only stall door that was shut. Applejack gingerly stepped over to it and knocked. "Dash?"

"Go away." She said simply, not really in the mood to be talking to Applejack.

"Please, can ah just explain myself?" Applejack offered, wanting to make things right between the pair.

Dash thought for a moment, before sighing. "Explain then."

"Ah know ya hate me fer what happened, but ah swear ah had nothin' to do with it! Rarity here took my phone and texted you, she told me just now." Applejack gave Rarity a sideways glance before continuing. "And then when she saw me at the party, she lied about you bein' ill. Ah'm sorry if it seemed like ah lied to ya. Ah wanted to go with ya to this party more than anythin'."

"Dashie, even I knew Applejack was excited to go with you." Fluttershy added.

There was silence for a while. Applejack felt her shoulders fall in disappointment. Dash was probably still angry at her for dancing with Rarity. The stall door suddenly opened and Dash looked her in the eye.

"That's the honest truth?"

"Nothin' but it."

Dash looked at the ground, before she wrapped her arms around Applejack in a hug. The cowgirl felt relief as she returned the embrace.

"You owe me a dance." Dash whispered, pulling away and giving Applejack a sly wink as she headed back out to the dance floor. Applejack blushed, trailing after her partner.

"So, what do you say, Fluttershy? Want to dance?" Rarity extended her hand out to Fluttershy.

"I-I can't dance very well." She said gently.

"I'll teach you!" Rarity grinned, dragging Fluttershy away.

[700 words]

Wow! I haven't updated in a while! I'm super sorry for that, I'll try to be more active. Also, if you want to request any plot ideas, you may do so and I'll make it into a oneshot! <3