I'm pleasantly surprised with this series. It is not the emotional roller-coaster I was expecting at the start, with a yandere prince; it's really neat, it focuses on the MC even outside her romance with the prince, and it's overall well written.
Highlighting how important those items are for her, refusing the deal, then saying "we're thinking of [...] spending a few days enjoying the sights": what a shrewd man, he knows that she's going after them. And that "farewell, beautiful future crown princess" screams "see us in disguse, not as a princess". What followed was only natural. (Bonus: she drinks like a soldier, it seems.)
The prince being jealous is at the same time chilling and heartwarming. And... how many crown royals have the luxury of having their SOs preparing a meal for them? Also cue to the indirect kiss, as he tastes the soup from the same dish as she was doing.
Aaaaand of course just after the prince asks Rishe if she met his young brother, the boy pops up.