??

According to the novel, although he made her favourite dish, his expression was very rigid while eating it. In reality, it was because she loved it, and that's the only reason why he used to eat it in the past, but he hates the taste of that dish, so his expression becomes rigid every time he eats it. He used to think that even if I hated the taste, I should still eat it because she enjoyed it. But she didn't know that and always felt like he hated to eat with her. Even now, he made the same expression, which reminded her of the past, so the emotions she held bottled up emerged, and they had this argument

Ohh okay that makes more sense as to why she thought it was a joke thank youu x

Glad to help^^