你以为你多难忘那么你没心没肺
[nĭ yĭ wéi nĭ duō nán wàng nèi me nĭ méi xīn méi fèi]
The net name 'You Think You're So Unforgettable, Yet You’re Heartless' expresses irony and disappointment. The owner may be mocking someone's behavior of easily forgetting or not caring about what should matter, implying they have been hurt by someone’s carelessness towards them.