我以为你不会走你以为我会挽留
[wŏ yĭ wéi nĭ bù huì zŏu nĭ yĭ wéi wŏ huì wăn liú]
It expresses complicated feelings between people; someone may not expect another to leave, assuming they would try to stop them. It highlights emotional misunderstanding and assumptions in personal relations.