"What ‘love’ means from person to person, let alone from century to century, is one of the most varied in the English language. The word ‘love’ was once ‘*leubh’, a word used by the Proto-Indo-Europeans approximately five thousand years ago to describe care and desire. When ‘love’ was incorporated into Old English as ‘lufu’, it had turned into both a noun to describe, ‘deep affection’ and its offspring verb, ‘to be very fond of’."
The Copy Team Etymology series: https://thecopy.team/blog/origin-word-love-copy-team-etymology-series/