Chuuya Nakahara was your partner, well that's what you thought since you guys did everything the average couple did. You two had even made love to eachother once in his bathroom, while his parents were at the table having dinner. In your mind you two were dating but without saying it to eachother.

When you two were on what you thought was a date chuuya suddenly brought up that he had a girlfriend, even though you thought you two were dating so you had asked about you two

"We're not together, it's just casual" he replied while looking at you, but he had said it like it was the most normal thing ever