你不小心喂我喝了毒药但是你却没有找到解药
[nĭ bù xiăo xīn wèi wŏ hē le dú yào dàn shì nĭ què méi yŏu zhăo dào jiĕ yào]
A metaphorical way of saying that a person unintentionally harmed someone emotionally (fed them poisonous drink). And adds drama by mentioning the idea that because there is no antidote found implies that it is irremediable emotional pain inflicted.