It Started with a Kiss (2005) (Taiwanese drama) Complete (hardsubbed)

Yuan Xiang Qin (Ariel Lin) is a bumbling, intellectually challenged, naïve, but optimistic high school girl. Ever since she met Jiang Zhi Shu (Joe Cheng) at the freshman orientation, she's been in love with the genius with an IQ of 200. After two years of having a crush on him, she finally musters the courage to confess her love to him at school with a love letter. Zhi Shu is not impressed, and Xiang Qin is left humiliated publicly in front of their entire school.

That afternoon, the new house she has just moved into with her father collapsed in a minor earthquake. She and her father are instantly left homeless because they lacked the foresight to pay for earthquake insurance. Fortunately, her father's old college friend extends a helping hand and invites both of them to live at his house. Little does Xiang Qin know that the kind Uncle Li is actually the father of Jiang Zhi Shu.

Because of this unexpected turn of events, Zhi Shu and Xiang Qin begin living their lives under the same roof. Zhi Shu's mother aspires to bring them together, coaxing Zhi Shu into tutoring Xiang Qin and taking numerous pictures of the couple together. Zhi Shu remains cold towards Xiang Qin, thinking her to be one of the dumbest people he has ever met, and refuses to speak to her at school. Through the course of the series, Zhi Shu slowly warms up to Xiang Qin, who tries her hardest to do better in school for him, as they deal with romantic rivals, their futures, and their relationship.