我是有病忘不掉你
[wŏ shì yŏu bìng wàng bù diào nĭ]
It implies obsession or strong emotions that make forgetting someone or something impossible. In other words, 'I am so sick because I cannot forget you'. It expresses the user's difficulty in forgetting someone who has affected them very deeply, probably negatively, or in a way the user feels troubled about.