What novel is the heroine's breakup and the hero's madness?

A crazy novel about a woman breaking up with a man: his paranoia.

Men and women are neighbors, and men are younger than women. The man's family is special, so the man's mother often beats the man. Later, the woman helped him once and the man fell in love with her. The woman never knew that the man liked herself and regarded him as her brother. The male host's IQ is relatively high, he skipped grades continuously, and finally he was only one year younger than the female host.

The man is a boy with a love story. He has been telling love stories since his confession was rejected, and clearly showed us the woman! Of course, because the man is paranoid and possessive, there is a little friction in the middle The man doesn't like anyone to share women with him and wants to monopolize women, but this is impossible, so there will be friction between men and women, and the man will hurt himself and make the woman feel distressed. Later, the woman also understood the man's mind, and the man was willing to make changes for the woman and be a normal person, so the ending was super sweet!

Novel review

The novel as a whole looks very comfortable, with delicate and touching writing and realistic writing. The author describes the inner activities of the characters quite vividly, and the woman's love view is very positive. On the contrary, the man has been interrupted

From the beginning, the man disliked the woman everywhere. Later, he became jealous when he saw the woman making out with the man. The woman is lively and lovely in the sunshine, the man is paranoid in the black, and she is extremely lacking in love. The man doesn't trust anyone except his sister because of his life experience, and he opens his heart after all kinds of experiences with the woman.