I Don't Date Cheaters - (Eren x Reader) Modern!AU

You walked home form the hospital. You were sick and Jean decided to drive you to the hospital. You had been sick for a while now, and Sasha drove you home since Jean didn't pick you up.


You walked up to the bathroom to get your medicine, and then you heard a loud grunt.

....

The fuck?

You walked closer to the bathroom when you heard another noise. It was a feminine moan. It took you no less than 2 seconds to comprehend what was going on.

Jean was cheating on you.

Well, tonight's the night bitches die. You thought, walking to the restroom and swinging the door open.

Jean and Mikasa were all over each-other in the shower, both of them completely naked, making out like wild animals while Jean constantly pounded her.

Mikasa. your best friend who stuck by you. And this fucking slut was just backstabbing you.

You covered your mouth, tears falling down your face.

You ran out of the bathroom, crying.

~*~

You ran out of the apartment and closed the door, sliding down and crying in your knees.

"(f/n)?" You heard a voice ask you.

You looked up to see green eyes meeting your (e/c) ones. Realizing it was Eren, you hugged him tightly.

"What's wrong?" He asked, hugging you back.

"J-Jean, he's cheating on me with Mikasa.." You cried.

"With who now?!!?" He said, letting go of you. You and Jean had been dating for 3 years, Eren and Mikasa dating for 2.

"Mikasa.." You sobbed.

His expression softened and he looked like he was about to cry himself.

"I can't believe Mikasa would do that to me.." Eren said, sitting down next to you.

"I can't believe Jean would do that to me..." You said, leaning your head against Eren's shoulder.

You could feel your hair getting wet, meaning Eren started crying.

You turned around and hugged him, and he hugged you back. You both kinda sat there crying in each-other's arms for a good while before your apartment door opened.

Knowing it was either Jean or Mikasa, you huffed and got up, walking away and wiping your tears.

"Eren, what's wrong?" he heard Mikasa say.

"Oh, nothing. I'm fine." Eren said, getting up.

"I love you." Mikasa said with a smile.

"Mhm." He said, getting up and walking in your direction, not giving Miaksa a second glance as she stood there frozen.

~*~

You decided to stay at Eren's house for the night, you didn't want to face Jean, and Eren didn't want to face Mikasa.

"You know what (y/n)." Eren said, as you looked at him.

"We can't just sit here in our own self pity. We have to get them back." Eren said as you smirked.

"And I know just how." You said.

"How?" Eren asked.

"You know Jean's birthday is next week, right?" you asked.

"Yeah, so what?"

"He told me he always wanted a birthday party, and I'm going to throw him one." You said.

"How is that gonna get back at him?"

"Well, Miaksa is going to be there, I know for fucking sure. So, I though we could.." you whispered the rest in his ear.

Eren smiled mischievously as you did the same.

"Let's do this."

~*~

You knocked on your apartment door.

Jean opened it as expected.

His eyes widened when he saw it was you, and hugged you tightly.

Even though it grossed you out, you had to pretend you didn't know anything about 'that'.

"Where were you last night? You didn't come home." Jean said, kissing your cheek.

You had to refrain yourself from slapping him or wiping your cheek with hand sanitizer.

"Eh..well, I decided to spend the night over Sasha's house, since she picked me up form the doctor." you said with a fake smile.

"I missed you, why didn't you at least call me?"

"I uh..Went through some tough stuff." You lied.

"Alright.."

"Look, i'm gonna spend the day with the girls, so, i'm not coming home til later." You said.

"That's fine.."

"Oh, and one thing." You said.

"Yeah?" Jean asked.

"I'll throw you that birthday party you've wanted forever." You did another fake smile.

"I love you!!!" Jena said, hugging you tight. This time, you pushed him off you.

"Mhm." You said, walking away.

*~Time skip to Jean's Birthday party because I can~*

"Alright, gifts timeeee!" Sasha cheered happily, winking over to you as you winked back. Everyone knew about you and Eren's plan to get back at Mikasa and Jean, and played along like they didn't know.

"Who wants to go first?" Connie said looking over to you.

"I'll go first." You smiled, handing him a DVD.

"What's this?"

"Oh, me and Eren decided to say a little happy birthday speech to you, that's all. I didn't really have any money to buy you anything." You said with yet another fake smile.

"That's okay. It only matters that it's from you." Jean said, kissing your cheek.

When he walked away, Levi threw you the hand sanitizer and you quickly wiped your cheek.

He placed the DVD in and saw you and Eren in Eren's room. Eren stood next to you, both of you with smirks on your faces.

Hey jean, we just wanted to say happy birthday! You really deserve it, I'm glad I could pay for it. - (y/n)

Yeah, even though we didn't have any money, we decided to make this video for you, horse-face. - Eren

But, before we end this video, I want to say oneeee more thing~ (y/n)

Wanna do the honors? - Eren

I'd love to. - (y/n).

Well, you backstabbing little bastard, i saw you in the shower with that slut, Miaksa. - (y/n)

You think you're really funny don't you, Mikasa? You thought I still loved you. (y/n) told me she saw you. - Eren

Aha, well, even though we hate your damn guts, we wish the best for you guys. hopefully your children won't have as many STD's as Mikasa. - (y/n)

Hope you guys have a happy life together and, - Eren

I DON'T DATE NO CHEATER! - Eren and (y/n)

Then at the end of the video, you and Eren kissed, both of you raising your middle fingers to the camera.

Everyone cheered, as Jean and Mikasa stared wide-eyed.

"We really do wish the best for you guys, though." Eren said with a smirk as everyone laughed.

"Oh, and by the way," You started.

"WE DON'T DATE NO CHEATERS!" You and Eren yelled, running out of the apartment door.

Then you opened the door back up.

"Oh, and by the way Jean, My stuff is gone. This place is all yours, motherfucker." You said, slamming the door shut as everyone cheered.

*~Bonus Ending~*

"You think we did a little too much?" Eren asked, as he started his car with you in the passengers seat.

"Who gives a flying fuck? They deserved it." You said.

"You should've seen the look on their faces." Eren said, as he drove out of the driveway of the apartment.

"It was priceless. But hey, Eren." You said as he looked at you.

"Cheat on me and you better have your last words ready."