The author explains that five essential requirements need to be met in order for relational love to exist: (1) a relationship between at least two persons, (2) mutual influence through autonomous decision-making, (3) a voluntary commitment to each other, (4) an ethos based on trust and beneficence, and (5) altruism, good will, and a spirit of self-sacrifice.
The common thread among these elements is that love cannot be something solitary — by its very nature love means you need a second person. But when we say "God is love," love itself is not just an action, it is now the nature of God's being.
However, real love needs free will and selflessness. But, that element of choice also has the potential to do harm. Thus the presence of evil does not necessarily oppose God love, but may be the result of those aspects/modes of reality in which love is possible.
Does that mean evil is somehow a byproduct of divine love?
– William James