The following is from etymonline.com:
Also, Greek, eran "to love", erasthai "to love, desire"O.E. lufu "love, affection, friendliness," from P.Gmc. *lubo (cf. O.Fris. liaf, Ger. lieb, Goth. liufs "dear, beloved;" not found elsewhere as a noun, except O.H.G. luba, Ger. Liebe), from PIE *leubh- "to care, desire, love" (cf. L. lubet, later libet "pleases;" Skt. lubhyati "desires;" O.C.S. l'ubu "dear, beloved;" Lith. liaupse "song of praise").
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What is the Historical Origin of the Word "love"?