Ebbie, you beat me to it. ;) I think that the Greeks had the right of it, by having four different concepts of love.

Storge: natural affection ("huggy" love)
Eros: sexual desire
Philia: friendship ("brotherly" love)
Agape: altruistic or unconditional love

Regardless of one's personal religious/spiritual leanings, I've always thought C.S. Lewis' tract on the subject ("The Four Loves") was an interesting read. Very thought-provoking.

Slán,

~Fionn

www.geocities.com/children_of_lir