Umm...
I haven't really gotten to that part yet. But I heard that it was all a misunderstanding on her part? I'm also confused. On Korea, her other self was in a coma and they were all there, hoping for her to be cured. Her father even brought many doctors from another country to treat her.
But! It could also be the course that was casted on her. I'm not sure really ;-;
Okieee!
To be honest, he was first intrigued with her. It was like a slow, gradual interest that got deeper and deeper every time they meet. But I think it all began when she saved him from dying...? There was this moment on the novel where they were in a hunting contest and got separated from the others. It's actually quite complicated and long. But to put it simply, the prince was stabbed with a poison dagger because assassins were after the prince. And then she somehow protected and brought him back using a teleportation map. When he woke up, Penelope's been arrested for accusation of trying to harm him and got to trial, but she won. They meet again and he thanked her and asks what she wants in return. Penelope answered that the prince promise to not kill her and not to be angry because Penelope said that they were lovers, or ex-lovers, to somehow give reason to why they were together, so she could win the trial. He didn't get angry but rather got amused by it.
To those who is in need of spoilers, I shall bestow them upon you if you wish.
Also! You can read the novel version of this on Wattpad. (=・ω・=)