遗忘不算辜负是吗
[yí wàng bù suàn gū fù shì ma]
It questions if forgetting something or someone can be considered not letting them down. '遗忘' (wàng) means to forget; '不算辜负' (bù suàn gū fù) implies 'not considered betraying'—expressing uncertainty and perhaps seeking solace in moving on.