他像我心脏
[tā xiàng wŏ xīn zàng]
By likening a person to their heart, this conveys deep intimacy and significance of this 'he' (a special someone) who occupies an irreplaceable position similar to a vital organ, meaning that 'he' is crucial to the life and feelings. This suggests intense dependency and affection for this individual, who has become indispensable to daily happiness and function.