He's fallen head over heels in love with his boss.

他深深迷恋上了他的上司。

《牛津词典》

I was very attracted to men and fell head over heels many times.

我那时很容易被男性吸引，多次深陷情网。

《柯林斯英汉双解大词典》

Peter shot off and rushed head over heels down the mountain-side, turning wild somersaults on his perilous way.

彼得拔腿就跑，头也不抬地冲下山坡，翻着跟斗向前滚。

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But how do you keep from choosing a dubious financial partner while falling head over heels?

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Still head over heels for each other all these years later, the couple embraced.

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There are more stories, he went on, about a guy falling head over heels for a set of wheels.

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