"What attribute of the divine Majesty so clearly shines in all the world as his communicative goodness, which is love. . .Faith is perfected by its works, and love perfected by its operations." (Matthew Henry Commentary, 1 John 4:7-13)
Love as "communicative goodness." It is our actions, not our words and certainly not our emotions. Lack of love is amended by operating as if perfect love were present. This is the challenge. To love in doing (and thus in reality?) even when feeling that love is impossible.