Quotes:

“Hang on a moment!” said Ron sharply. “We’ve forgotten someone!”
“Who?” asked Hermione.
“The house-elves, they’ll all be down in the kitchen, won’t they?”
“You mean we ought to get them fighting?” asked Harry.
“No,” said Ron seriously, “I mean we should tell them to get out. We don’t want anymore Dobbies, do we? We can’t order them to die for us—”
There was a clatter as the basilisk fangs cascaded out of Hermione’s arms. Running at Ron, she flung them around his neck and kissed him full on the mouth. Ron threw away the fangs and broomstick he was holding and responded with such enthusiasm that he lifted Hermione off her feet.

Ginny: Harry, what happens if Umbridge finds out?
Hermione: Who cares?
[everyone stares at her]
Hermione: I mean, it's kind of exciting, isn't it? Breaking the rules?
Ron: Who are you, and what have you done with Hermione Granger?
Hermione: [laughs]

Ron: So how was it?
Harry: Kind of . . . wet.
Ron: [laughing at Harry] That bad at it, are you?
Hermione: I'm sure Harry's kissing was more than satisfactory. Besides, Cho spends half her time crying these days.
Ron: [still chuckling] You'd think a bit of snogging would cheer her up!
Hermione: [explains exactly how Cho feels]*
Ron: No one can feel that all at once! They'd explode!
Hermione: Just because you have the emotional capacity of a teaspoon . . . [all three laugh at this]

"Well, if you don't like it, you know what the solution is, don't you?" yelled Hermione...
"Oh yeah?" Ron yelled back. "What's that?"
"Next time there's a ball, ask me before someone else does, and not as a last resort!"

EMMA: Between Ron and Hermione, it's one of those classic love-hate relationships. And on the outside, they are constantly fighting, and so they argue all the time, but I think deep down they have a bit of a soft spot for each other.