Said the jilted lover, "I have burned my fingers once. I shall never fall in love again".

一位失恋的人说：我这是引火烧身啊，我再也不想恋爱了。

youdao

Once couples fall in love and settle down, they fall out of the habit of making an effort.

两人一旦坠入爱河、感情稳定下来，就不再努力了。

youdao

But once you fall in love with this type of man, never think of changing his character.

但是一旦你和这类男子坠入爱河，永远不要想着能改变他的性格。

youdao

They fall in love at once and plan to marry.

VOA: special.2010.01.06

They will grow old, but their hits never will -- once people first fall in love with those songs, the songs will mean something powerful and evocative to them for the rest of their lives.

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When, during his apprenticeship in Bruges, Meaume meets Nanni, an alderman's daughter, the two fall in love at once.

ECONOMIST: Recent French fiction