A/N: I haven't read the manga.
The chapter titles are names after parts of different songs by Kimbra. Look her up she's AMAZING (especially her live studio performances).
When I read this over I find that it's meant to be read slowly...
The day they started dating, Aomine was positive it was the best day of his life. It had been raining hard that day and even so Kagami had still challenged him to a game of basketball on the neighborhood court. They met outside of Seirin after their practices that day and Aomine forced himself to hide his excitement when he saw Kagami approach the school gates with Kuroko trailing closely behind. It was only sprinkling as they walked and chatted lightly and the sun was out anyway so it was nice enough. When they made it to the fenced in court it was a good hour of fast paced play before the sky became heavy and gray. The three boys were sweaty and tired, muscles aching from practice burned with renewed fervor from excessive use. Kuroko had decided to sit out halfway through the casual play and watched as Kagami and Aomine went one-on-one.
When the first real drops hit the ground the two panting teens made their way over to Kuroko. In the moments it took them to get from one side of the court to the other they were caught in a complete and total downpour. They were drenched and it seemed useless to try and find cover at this point. They stood together in a triangle and as Kuroko shivered Kagami casually pulled his smaller body towards himself, shielding him from the rain if not a bit. Aomine paid it no mind as he looked up to the sky and his eyes scrunched closed and the water assaulted his face. Kagami watched in intrigue as the wide grin on the navy haired boys face shone bright as if the sun had never left.
When he brought his head back down to face a slightly smiling Kagami and the beautiful wide eyes of Kuroko, he knew. He knew this was the moment. He knew few words needed to be exchanged. He knew this could be simple, difficult, but simple. And he knew they felt the same. He had always been fond of Kuroko, even after everything that had happened between them. And Kagami was something else, someone he didn't imagine he could ever fall for, yet now he sees how it made sense that he did.
He reached out both of his arms and simultaneously ran his hands through both of the others' hair, successfully slicking it back with the help of the rain. They closed their eyes for a moment at the contact but smiled and reopened them to witness through the water's movement between them, Aomine's lidded eyes and content smile, a look they had never been privy to, but would like to see more often.
"I think I love you guys!" He shouted over the loud hum of the downpour. They were soaked to the bone but none of them cared as they all grinned and hastily began their journey to refuge. They found it in a nearby bus stop. No one would be caught dead in such a storm yet here they were. Their hearts beat wildly from the frantic sprint to the small enclosure, and from the warmth spreading through them as they looked to one another and couldn't be happier.