Remilia said that it only amplifies the affection towards the person, not brainwash them. Will chose to be against Remilia
They are not brainwashed. It's just amplifying their emotions, and it was also up to them if they'll accept it or not. Prince is insecure and jealous of Remi so he accepts it for his ego. The only one who isn't bounded by the spell is Remi's brother but still acts like that so Remi will be his.
Nah, that men wanted to see Remi go down because he always felt inferior to her.
I kinda feel a bit bad for the prince….like she was literally her childhood sweetheart but got brainwashed so bad.