只要对你死心塌地只要对你矢志不渝
[zhĭ yào duì nĭ sĭ xīn tā dì zhĭ yào duì nĭ shĭ zhì bù yú]
The phrase conveys unwavering devotion and loyalty towards someone, emphasizing the determination and resolution of the person’s love and faithfulness without wavering regardless of any situation.