a phrase that comes directly from the French into Norman English, tomber en amour, or tomber amoureux, 'fall in love'. Even our phrase 'in love' comes from the French 'n amour' which we also use as 'enamor', or to be 'enamored of' someone or something. The key here, and what would make the most interesting essay, is the contrast between 'being enamored of' and 'loving' someone or something. To love is not the same as to fall or be in love. And in Sanskrit there are different roots entirely for love that is affection, devotion or passion. (and I know the French goes back to earlier Latin usage and vocabulary, but English gets it through the French, I think. I can't remember, but would be interested in seeing how this concept is treated in Old Norse, or the Celtic languages. I think German uses a different construction to mean the same thing.)