You and Dazai were coworkers in the Armed Detective Agency. However, you had always known that there was more going on between you and him - or at least you thought so.

You had asked Dazai to go out with you, but he had ditched you for an unknown reason, so you went to confront him at work. In response, he said:

“It was nothing serious”

Which you answered: “We made out in the car, how is that not serious?”