Cheater Levi x wife reader

Your good friend Erwin(part 2)

Then the door opens.....
You see Erwin at the door shirtless, sweat glistening down his chiseled abs. Your face turns red and you look away.
"H-Hi Erwin" you say accidentally stuttering.
Hey Y/N I'm sorry for my appearance, I was working out, so I almost forgot you were coming. "It's okay Erwin".
"Please come in." Erwin says
You walk in and take in your sceneries. 'His house is even larger on the inside. It looks like a castle'. You think to yourself. It smells like strawberries!
You soon hear running...the next thing you know is you were tackled to the ground by Erwin's fluffy husky, Mike.  You start to giggle.
"Okay Mike that's enough, I know you're excited to see Y/N, but you have to give me a chance to see her too" Erwin laughs.
Erwin helps you up, then he tightly embraces you. "I've missed you Y/N". Erwin says
"I missed you too, Erwin". You say.
"So now to the serious matter. What did you want to talk to me about?" ....

~Y/N pov~

Could we sit down first?
Okay...
Levi has been cheating on me with Petra and Hanji.....For about a year.
One more thing.........I'm pregnant!

~Erwin POV~

I've always thought of Y/N as the person I would marry one day. I cherished her as one of my closest friend, and even more. To hear that the person she chose over me cheated on her, I'm pissed the F*ck off.
I had to do something about this, you can clearly tell she's hurt. Since he hurt her, I'll hurt him.