忘东忘西忘不了你丢三丢四丢不下你
[wàng dōng wàng xī wàng bù le nĭ diū sān diū sì diū bù xià nĭ]
It means 'Forgetting this and that but not forgetting you, losing this and that but not letting go of you.' The user may feel forgetful about everyday things but remembers a significant other they can’t forget, showing attachment or infatuation.