I think im really glad she doesn't know that he's the crown prince because I feel like if she knew, her immediate thought would be to seduce him and use him for her own benefit, and would try hardening her heart in fear of it not working out or something along those lines. but because she doesn't know his true identity atm, she's allowing herself to think freely of him and actually get to know him in a genuine and natural manner. gosh everything about this Manhwa is so well thought out I love it sm