*Exalt*
For me, I think Ginny just had a celebrity-type crush on him in CoS. Of course, that went on 'till her fourth year when she finally got over him. I think that even below all of that, she still had slight feelings for him but never admitted it. And BAM, when Harry kissed her in HBP, she knew that she was definitely in very, very, real love.
And Harry, as you people obviously know, didn't have much feelings for Ginny until later on. It was probably by the end of his fifth year, but he didn't realize it, and it finally came to the surface in his sixth :]
Hermione; this is what I think happened for her:
First Year: She told herself she hated him, hated his guts, hated his everything. But in the end when she saw his sacrifice on the giant-chess set, she realized that she didn't hate him at all, but liked him loads (as a friend right now, not love yet
)
Second Year: Her feelings grew. Having just realized that she was quite fond of him now, she tried to fight with him less. That's all for Year Two, I guess.
Third Year: Ah, the great Cat-and-the-Rat fight! And guess what! Hermione's just got a crush on ickle Ronniekins!
Fourth Year: The
infamous famous Yule Brawl! She's just realized she's in love with him and really wants him to ask her to the ball, and thus, the irritation when he says that he'll basically go for looks.
Fifth Year: She's madly in love with him now. She tells him he has the emotional range of a teaspoon because he can't understand his feelings for her yet.
Sixth Year: Terribly, madly, crazily and ridiculously in love with him. She takes the initiative and asks him to Slughorn's party herself. She's
considerably VERY, VERY, VERY happy after he accepts, but that's all brought down when he finds out that she kissed Krum (she doesn't know he knows, but...) and he starts dating Lavender. But after the poisoning abd the break-up, they grow closer than ever.
Seventh Year: Of course, the kiss
And for Ron:
First Year: Same as Hermione. He keeps telling himself that he hates her, but deep down, he really does like her.
Second Year: When Hermione gets petrified, he realizes that he would really miss her if she ever left him. Poor kid
Third Year: Pretty much the same as earlier; he really does like her, and he argues with her basically for the heck of it
Fourth Year: He loves her/has a crush on her, but he hasn't realized it yet. He's really confused about his feelings towards her.
Fifth Year: He realizes his feelings for her after she gives him the good-luck kiss
Sixth Year: He's really in love with her and he tries to get her jealous for kissing Krum.
Seventh Year: EXTREMELY in love with her, and thus, the kiss!