I don't want to bring up PUA, but...

I had trouble understanding wedifrid's reaction to Harry and hypothesized that he enjoyed empathizing with a dominant character and didn't want that dominant character to apologize

...if you're empathizing with the character...

"I, ah... I don't have much experience apologizing, I'll fall to my knees if you want, or buy you something expensive, Hermione I don't know how to apologize to you for this what can I do just tell me?"

...then one thing you might feel here is searing embarrassment at the sight of a boy acting this way in front of a girl. I had in mind the old saw about men being attracted to looks, women to status. 'I'll do anything, I'm begging you on my knees' is utter abasement, and even if 11-year-old Harry thinks this is what normal interaction between the sexes looks like, it's still painful to see someone humiliate himself.