Xendros did not want Prince Faestien to go yet. He fears that after this, after he goes back to the castle...
He will just be a dream to him.
A dream that will be forgotten and fade away, like a ghost that had finally passed, and can only become lonely in the afterlife after being forcefully exorcised.
He has such strong fear of being forgotten by him..... Why is that?
He does not want him to go yet..... He does not want everything that happened, though may be insignificant to an outsider's eye, to fall apart just like that. There wasn't anything memorable about him to maintain a place in someone as important as Prince Faestien. There wasn't anything that happened to them either that will be a lasting memory for anyone.
After all, it had only been two weeks of knowing each other. Two weeks. It went by so fast.