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Did u not read chp 6?

I was thinking the same thing. Unlike the others manwhas/mangas, this crown prince doesn't want to get married to FL, more like it's a political marriage that he needs to do for the tighten the relationship with the Marquis. I mean it said he wanted to marry the girl but he can't. Which yeah, I get it but he's not as bad.

chapter 6 just shows them being surprised about how she changed from before,, what else is there?