Some feelings are like helium filled balloons, up, up, and up they go, until our chests are so full of them, they might as well spill over, an emotional flood.
Logic wasn't necessarily Tae-Jun's friend, other than marrying the Crown Princess makes you king: very simple math, that can be done so very easily. But then, the heart gets involved, and logic once again flies out the window.
After all, Tae-Jun can't become king by marrying Yona anymore, because a coup would have to be enacted, and Tae-Jun is many things, but none of them is a seasoned soldier. His older brother had all the battle prowess after all. Tae-Jun had spent most of his life being the disappointing youngest son after all.
And yet with no social gain by being drawn to her, Tae-Jun had fallen for Yona, drawn more deeply towards her than he'd ever known he could. Yona had indeed become a precious person in Tae-Jun's eyes, someone that every second with grew even more amazing in his eyes.
Yet hearts can dodge logic so very easily, and somehow he's lost in this impossibility, as he's more aware than ever that his heart is perhaps more foolish than anything he's ever known.