一句爱我像是要我命的毒
[yī jù ài wŏ xiàng shì yào wŏ mìng de dú]
This expresses that hearing 'I love you' is as lethal as consuming poison; it means that while it's intoxicating or overwhelming to hear someone confess love, it may also feel painful, dangerous or even destructive for some reasons known only between these two people.