我拿你当心你却拿我当饭
[wŏ ná nĭ dāng xīn nĭ què ná wŏ dāng fàn]
Expressing feelings of betrayal, this phrase can be summarized as 'I cherish/take care of you, but you treat me like food' (a necessity but without care). It’s commonly used to express resentment over being taken for granted or mistreated after showing care.