If you wish to read the novel, start after chapter 90 (I don't remember the exact chapter)
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Spoilers
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After Erna leaves to live with her grandmother, Bjorn tries to bring her back.....that's when the chasing arc starts(it's really good). He's not mean to her, his pov will be shown soon. He was actually happy about Erna being pregnant and was equally devastated upon hearing about the miscarriage but he never conveyed his feelings to Erna at that time.
https://novelup.xyz/series/the-problematic-prince/
should be the link. found it some weeks ago in the comment section^ω^
Can anyone give me spoilers or what chapter in the novel it will be after they find out she’s pregnant like I know she has a miscarriage and then she leaves but what happens after that is he so mean to her? Do they finally fixed a relationship like this man pisses me off (╯°Д °)╯╧╧