Etymology of Love
The English word love comes from Old English (lufu). Lufu, in turn, comes from the Proto-Germanic lubō. The word love is widely used in the English language, and ranks among the top four hundred most used words in the English language. As such, it has spawned many variants. Some examples include lovebird, lovefest, lovelock, lovevine, lovelorn, lovebird, lovemaking, lovesick, lovebug and loveseat.
Love has different origins in other languages. In Hispanic languages, amor usually means love, and this word comes directly from latin (amor) and has Indo-European roots (amma).
Liberman, Anatoly, Analytic Dictionary of English Etymology, University of Minnesota Press, 2008.
Watkins, Calvert, ed., The American Heritage Dictionary of Indo-European Roots, 2nd ed., Houghton Mifflin Co., 2000.