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 have fallen head over heels in love with a wonderful woman.

她是个好女人，我爱她爱的神魂颠倒。

youdao

Avery has fallen head over heels for shoes. And not just any shoes. Stilettos are what make her go weak at the knees .

艾弗里对于鞋子可谓情有独钟，但并不是所有的鞋都能投其所好，细高跟鞋才是她的非常爱。

youdao

Of course, there's a lot to be grateful for in my situation -- not the least of which is that I have a delightful daughter who I've fallen head over heels in love with myself.

CNN: I'm jealous of my baby -- a Mother's Day confession