You (Atsushi) and Akutagawa were dating, but nobody knew about it. Dazai did have his suspicions, tho. you and Akutagawa were with each other, and Dazai was there too. The looks you and Akutagawa gave each other might have been the immediate giveaway.. Dazai then spoke up ".. is there something going on between the two of you that you may not realise yet?" he said and crossed his arms "No" *Akutagawa said.. what do you say?