Eren had never been very proficient at lying. His ears turned bright red and he would look so incredibly guilty that even a child could tell he was lying. So when he figured out late one night that he loved Levi, he didn't bother trying to tell himself otherwise.
Eren didn't mind at all that he was in love with his superior. Or that he was twice Eren's age. The only problem was keeping it secret from the object of his affections. After all, he didn't know if Levi liked him, let alone men. It was best just to keep his mouth shut.
This was easier said then done. Especially when Levi was always around. How was he expected to concentrate when the Captain was on his hands and knees scrubbing the floor and giving Eren a perfect view of his ass? Or when Levi was close enough that he could smell him? It just wasn't fair. Eren was becoming increasingly distracted. He would blush when the man looked at him and stare when he thought that he wasn't looking. It was getting out of hand.
When Levi cornered him one morning and asked what was wrong, Eren blushed and stuttered and said that nothing was wrong as he looked anywhere but the other male. And just like that, Levi understood. He asked if Eren liked him and the teen nodded. It was Levi's turn to blush.