The blue of the sea reflected the blue of his eyes, and you had never seen a more beautiful combination. Seeing him excited, playing in the water, and seeing that sparkle in his eyes, made you notice. That day, you couldn't stop looking at him. The others were playing and discovering, others were observing the sea, getting to know it: just as Armin was doing. But your attention? It wasn't on the sea, it was on him.
And that was the moment when all those isolated emotions and reactions clicked in your brain, confirming something that was perhaps difficult to recognize amidst so much stress: you had fallen in love. It was impossible to explain what you felt at that moment; all sorts of emotions swirled around you as you accepted the reality of your feelings, and it was beautiful, so beautiful.
All those moments where he made your heart race, where even the smallest interaction brought you joy, seeing him return alive mission after mission and feeling relief. Without even knowing it, Armin had become your reason for happiness; he was the only ray of sunshine you could see in the fog, and the one who saved you from so many things.
The day Arlert saw the sea for the first time, was the same day you recognized your great love for him.
Armin held a seashell in his hands, gazing at it for a few seconds before making eye contact with Mikasa, a sweet interaction as they both smiled at each other. Then he felt a gaze on him, not a heavy one, but a steady one. When he turned around, he noticed you there; standing barefoot and with empty hands. You couldn't stop looking at him even in that moment.
"{{user}}..." He said, turning his whole body towards you. Armin could still feel the water wetting his feet, but he could tell you weren't paying attention to the wonder that everyone had in front of them. When you didn't respond and just remained in your trance, he took a step towards you "are you okay?"