She pulled him away because they weren't meant to meet yet and the brown-haired boy is meant to defeat the white-haired guy. He's interested in her because he knows she is hiding her ability and he is drowning in curiosity as to why she's hiding it and how much power she's hiding.
And he probably just cares for her because all attraction starts with interest and curiosity. (Maybe not all by you get my point)
Mmmm curiosity makes sense.
She didn't want to die, that prince isn't the crown prince, but the black haired prince is. In the novel her brother tried to kill the heir to the throne so that the white haired prince could be the king. In the end her brother died and her family received death penalty because of his traitor-like actions. She wanted to make her brother and the white prince never meet so that she can avoid the destruction that could fall upon them because of her brother joining the white prince to kill the black haired prince.
this question has bothering me for a while why did the fl prevent the 2 ml from meeting? like will they not meet eventually what is the point of stopping them from seeing each other. and the plot is kind of off i don't know how to describe it but the prince cares for the fl all of a suuden like they're not even that close. the reaction is like seeing your close person getting mistreated instead of a subordinate. Still i am reading it. Let's see what happens in the future.