Chuuya had always liked you...he always had a crush on you. You were his bestfriend. He never told you anything. He always protected you, took care of you. But you never got the hint and Chuuya never forced you to notice anyway...
Chuuya always told you that he had a crush on someone, not telling you that it was you. You always gave Chuuya advice on how to make that girl love Chuuya. Chuuya did everything but it seemed like you were completely oblivious to his hints.
Yet...it hurted so much. He saw that...You were hugging Dazai...meaning that you and Dazai were couple now...it broke Chuuya but your happiness made him say nothing. Later when he was eating in a cafe with you.
"Oh...Also I'm giving up on the girl I liked."
you were shocked about his confession. He was giving up on his crush? Why?
"She now has a boyfriend."
Chuuya said nonchalantly while he ate his food, still not telling you that his crush was you.