Moreover, if he encountered a similar situation, was there any book he could recommend?

What if the boy I like is two-timing? We were classmates. He was the one who chased me, and then I liked him, but I didn't tell him. I just said that I wanted to change my head. Then we changed our heads. He changed his head the next day. I heard from his friend that his girlfriend found out. It was only then that I found out that he had a girlfriend, but he told me that he didn't. Later on, we changed our relationship (Ha, he learned to be smart and his girlfriend didn't notice), but I changed it again (because I knew that he had mixed feelings about being two-timing), but he didn't seem to be angry or anything!
I don't know if I should tell him that I like him…He's a bit of a scumbag, but I like him

Answer 1

Looks like you met an unreliable boy. Exchanging your feelings isn't a good choice. I recommend you to read the novel "Flash Marriage Attack: A Black-bellied President Seizes the Love of His Life". Although the male protagonist is a little black-bellied, he is very loyal to the female protagonist and always tries to make the female protagonist like him. Or you can also watch "May You Have a South Wind in the Future". Although the male lead is a little cold, he is very serious and responsible. He is worthy of your trust and choice. I hope you like my recommendation, Mwah ~😗