@imtaciturn I don't think romantic yearning has tripped in for Dami yet. I think she is just sensitive to the Elder's mood and wants him to be happy, like most people would want someone they have to spend a lot of time around would.
I think the elder has just had his feeling brought to his attention.
If you think of love not as a feeling but as an action the love becomes more apparent. .
IF you think of Gye SeonWoo a certifiable piece of 💩🤬💩, but his behavior has changed since he developed genuine feelings for Dami. He is trying to be a better person.
The Elder only realized that he has feeling for Dami because he is treating her differently. It is the behavior not the feeling that shows the depth of love.
Feelings are selfish, about the lover's own emotion.
Behavior is stronger because it is about the feelings of the beloved.