Lol tbh idk if this is good but i love the idea of it. If you read the extended ending, its just a joke ending kinda to add to the pettiness at the end.

~

Your relationship was going strong with Oikawa.

You dated at the beginning of your second year at Aoba Johsai, and were the cutest couple.

He treated you like a princess, maybe even a queen.

Sweet dates, hugs, kisses, cuddles, late night texting and more. Everything a girl could want in a relationship.

And yet, where did you go wrong?

It began with him being late for a date. You waited for a straight 3 hours before going home.

He apologized, you made up.

No big deal.

And then all was well again. For about a week.

History was repeated, he was late for a date, stood you up a lot, you fought, you cried, he apologized, you kiss, you make up and repeat.

And finally, in your third year, Oikawa broke up with you.

The words "Let's break up" never hurt more.

"W-what?" You asked, with tears in your eyes.

"Did I stutter? It isn't working out." Oikawa answered coldly, before turning on his heel and walking away.

You knees wobbled and tears streamed down your face.

But you did not fall.

~

Yes, you cried yourself to sleep that night.

And then you skipped school the next day. Slept, ate chocolate ice cream, listened to sad music and watched sad movies.

And then you had an idea.

You've never thought of something smarter in your life!

You grinned to yourself and set your alarm for 5 am, and went to sleep extra early.

Can't have bags under my eyes, after all.

~

The dim light of the sun seeped through your window, and the soft beeping noise of your alarm woke you up.

You sat up and stretched with a smile on your face.

Can't wait to get to school!

You rushed to the bathroom, and washed your face.

You had about 2 and a half hours to get yourself ready for school to get some revenge.

~

Oikawa waited in front of the school under a cherry blossom tree.

Iwa-chan sure is taking a while...

Oikawa was early at school for once in his life.

He was minding his own business, quite liking the silence without his fangirls buzzing around him.

And then it hit him.

You walked in school like a boss.

Strutting down the pathway, with hair flowing and the right amount of make up to look bomb and flawless as hell, you didn't even spare your ex a glance. Your smirked internally knowing that you were perfect.

Everybody knew that the couple had broken up, but it was a surprise to see her back and better than ever so soon.

Oikawa's mouth was hung open, gaping like a fish at you.

Why isn't she practically broken still? Wtf why is she looking really hot right now?
wHY DId I bReAk Up wIth hEr?!?!?!

You heard the girls whispering at your smoking hot appearance and noticed the boys staring shamelessly.

Good.

If you learned one thing from those sad ass movies, it was this.

If you get your heart broken, do some squats and make him wish he still had dat ass.

If he dumps you, look absolutely flawless the next day and slay him harder than anyone else ever could.

"Trashykawa, if you keep your mouth open you'll catch flies."

Oikawa whipped his head around.

Iwaizumi stood there, smirking because he knew that you slayed the boy so hard he couldn't function anymore.

But he didn't say much as he walked with Oikawa inside the school.

Oikawa swears he heard him say "Bet you wish you didn't dump her now."

~

"Ne~ (name)-chan?" Oikawa smiled sweetly.

"(Last name) to you, Oikawa-san."

He admits, you calling him by his last name and adding the 'san' really hurt. And he was regretting dumping you.
Why was he so stupid?

His smile faltered, but he continued nonetheless.

"I'm sorry. I messed up. I still love you and I don't think you could ever forgive me but you need to know that I really do. I may not show it but I do and I don't even know why I did that. It probably hurt like hell for you, and I'm sorry. I don't deserve you, and you should have someone so much better. But I'll never stop loving you, and you need to know that. I messed up, yes, and if I were you I wouldn't forgive me. But if you love me, honestly and truly, do you think you could ever find it in yourself to forgive me?" Oikawa asked, his eyes swimming in unshed tears and with a hopeful look.

You took a deep breath,

and tried to hold the smirk in.

"Tooru....."

His face lit up, and he was ready to hold you once again in his arms.

And then you smirked.

"I'm sorry but you didn't seem to love me when I loved you. Maybe I'm not over you, but your an idiot and it was your loss to dump me in the first place." You suppressed a laugh when you saw his face drop and visibly pale.

"Sorry boo, but I won't cry anymore over jerks like you. You're right, you don't deserve me. I don't give second chances."

"B-but wh-" he began to speak, but you cut him off.

"Goodbye, Oikawa-san." Turning on your heel just like he did the other day, you stormed away.

Extended Ending

Speed walking out of his sight, you left him there. You didn't care that you still needed to attend class, you just needed to leave before someone saw you crying, mascara dripping down your face.

Pulling out your phone, you speed dialled a number.

It rang.

Once, twice, thrice. Then he picked up.

"(Name)?"

"T-T-Tetsurou" you cried.

"...so you did it huh?"

"mhm"

"I'll come get you."

"My mascara is running, don't scream when you see me."

He chuckled, and you managed a small giggle at your own joke- before hiccuping and sobbing all over again.

It hurt. It really did.

But hey, your friend Kuroo was there for you.

And maybe even one day, he might be something more. And when they say the words "I do", Oikawa can cry and regret his wrongdoings. In the end, he could cry because he damn wished it was him instead of Kuroo kissing you, the bride.

But that would be another story, a story for the future.