C477 Juno's Retort

Zorin thought that Darian had not deeply fallen in love with Juno yet. That was the beginning of a one-sided love. Why did he think that Darian was a one-sided love?

It was not hard to tell from the way she looked at Darian and her attitude towards him that they were just exchanging pleasantries and expressing their gratitude towards him. There was no other emotion in their relationship