The author of this comic is so preoccupied with the way other people think. There's a constant anxiety over what other people think of the main characters (e.g. how every time they go out together there are insert panels where faceless randos leer at the girl and say the protagonist looks like a loser beta male).
The question of whether other people are thinking of you in a way that's respectful, and being put in situations where people care more about their impression of you than they care about you as a person is, obviously, a great basis for storytelling. But is it being used meaningfully here? The protagonist isn't learning anything; his understanding of her and their relationship is not being deepened. He's just already behaving the right way because he's an honest tryhard who deserves the girl or whatever tf. He's not even the one having a conversation about being objectified with her, it's some other character who assures us he feels the same way. Why. What's the point. This comic is so broken.
Have you thought why that anxiety is there in the slightest?
A straight-up average dude is intertwined with a 10/10. Not this modern day "yassss queen, I'm a 10," she's a legitimate 10. So of course there's anxiety there. Also, hes had pressure to be the head of his family his whole life. The 10 and the familial expectations come together for more anxiety because he's in a wholely unethical situation for his future. Expectations and reality equal anxiety.
The reason other people need to tell Chizuru (rather REITERATE) to her is because Kazuya has been doing it all series long. Chizuru wasn't ready to hear it because she was too preoccupied with her grandmother's passing. Before that she was preoccupied with her Grandfather's. And before that she was ignoring the reality of her parents passing. Chizuru is walking through life fighting the urge to repress feelings as she learned how to do as a young child... That's why she's an incredible actress, she's been faking since childhood. Now, she's finally trying to overcome her past, reconciling with all the things Kazuya has said to her while she wasn't ready to hear it. And it's all flooding back to her in the present as their other mutual friends show to her that they see the exact effort Kazuya has been putting in for her.
Truthfully, take a clear look at your own life before you try to analyze the lives of characters that come from the mind of others who've clearly been through things. Maybe the level of introspection this manga offers isn't for you at this stage of your life