Surprising part of The Kite Runner

I’m on page 242 so far. The most surprising part of this book for me is Hassan was a bastard. I thought Hassan was absolutely Ali’s son and Agha Sahib treated him so well was just because Ali and him grew up together and they were really good friends. But it seems there were a lot of details of the book showed that Hassan had a special relationship with Agha Sahib. This gave Amir a strongly shock and made him go to Kabul and get Sohrab, Hassan’s son. He finally realized that he’d been fighting his brother for his father’s love. He found out how ridiculous it was. He would absolutely not do those things to Hassan if he knew that. It’s like everything Amir did or thought before turned out to be like a hilarious joke. It totally changed Amir’s mind and shaked his soul. Although I didn’t read a lot after that, I can see his mind changed because he called Hassan his half-brother. I think Amir will be a lot different after this thing’s happening.