I personally think that we are so used to whatever we are reading being so rushed that this feels slow. It is slow, yes, but I think that it goes with her dilemma and feelings and growth perfectly. You might say that 100 ch is a lot but not really. Letting go of feelings you've had for that many years is not easy. Much less trusting someone else after what happened. Especially someone younger at that. I think the pace is a testament to his patience as well. It would not be the same if it was done differently. The whole point is that he is patient and is giving her the choice to advance and build trust by showing that he is reliable.at her pace. Not like her prior love.
Anyway, we can have different options on the matter and thats what makes it interesting. People have different perspectives

Can we possibly progress the story? I’m ready to see the ex’s expression when he sees Na happy with someone else. I’m also curious how Na will respond when she learns Beom is a nepo baby. I’m sick of this!