Eren X Mikasa fanfiction

Armins jealously.

Armin knew eren and Mikasa had been dating, in fact he knew it for a while, and he was jealous. Because all his life he had wanted Mikasa. And Eren had swooped in like a knight in shining armor and stolen her. Armin was furious, and he knew their relationship was pretty serious. He acted happy for them but was really jealous. He hated Eren because of it. But who could blame them? They had known each other forever and Eren had after all saved her life. So she has a lot of reasons to want to side with Eren instead of Armin. But this pissed Armin off, because some how, Mikasa always reframed back to that. And he was pissed.

One night Armin decided to go talk to Eren and Mikasa. He turned the corner to their room and heard moaning and heavy breathing. He slightly cracked the door open and saw them having sex. Armin was devastated, but also happy at the same time. He had finally gotten to see Mikasa in the wild. As they continued to go on at each other Armin pulled down his pants and started jerking off. Wishing It was him instead of Eren. Finally Mikasa let out, "Eren I'm gonna..." And Mikasa and Armin both came at the same time Armin still peeking through the door an staring at them. Armin pulled his pants up and left happy.