The opposite to love is selfishness. Selfishness is sin and is made manifest through theft, adulteries, covetousness, lying, slander, gossip, seeking vengeance, seeking ones own way in distinction to God's way, or your neighbours. This is why love is so closely related to the law as Chad explained above...they are in fact synonomous. The law (that is the ten commandments) are merely the details of what love means. Jesus expanded on these details when He reminded His listeners, and by extension, us, that even our motives and thought processes (bitterness, unjustifiable anger, lust etc) are included in the law. Love therefore must be a deliberate heart response to God and our neighbour by way of action. Love cannot be neutral. Jesus said to love our enemies. He explained how we are to do that when He advised, or rather commanded, that we pray for our persecutors, bless those that curse us, do good to them that hate us, that ye may be children of your Father which is in heaven. (Matt. 5:44,45)
