jiā​huā​méi​yǒu​yě​huā​xiāng

the grass is always greener on the other side

家花没有野花香 家花沒有野花香 jiā​huā​méi​yǒu​yě​huā​xiāng
the grass is always greener on the other side
Literally meaning that flowers in one's own garden are not as fragrant as wild flowers; used to describe a person who finds other romantic partners more attractive than their own.