There is an exact moment when I knew Seungho was in deep, both in the moment and for the foreseeable future.
In Chapter 21, the first time they have sex, and Nakyum is drunk and delirious, and speaking honestly… but not to Seungho.
This is when his feeling changed. After this, he is confused and acts with an unusual lack of indifference. It stops being about getting Nakyum to paint, and becomes about getting Nakyum to love him.
And it is the beginning of him really grappling with what he feels for Nakyum.
Beyond this point… he begins acting out of character, and as Nakyum’s emotional maturity begins from this moment, so does Seungho’s.
From here, everything between them deepens.