A figurative idiom suggesting that men often find other women more alluring and exciting than their own wives or partners.

虽然他妻子温柔体贴，但他总觉得家花没有野花香，在外面有了外遇。

An idiomatic expression describing the general human tendency to value what is unfamiliar or external more than what one already possesses.

他总是羡慕别人的生活，这种“家花没有野花香”的心态让他很难获得满足感。