Depends if we know what love is. Those who can not love in a society in which love is fed upon can learn the way and sensation, then sometimes envy will lead to the "Non Lovers" to feed upon it and steal love for themselves. Become selfish and corrupted. Other times, the crucial disease loneliness will take effect and send the Non Lover to a hollow sate in which the hole in their chest becomes deeper than the average human. Evolved being, just having one percent of humanity makes you human. There is no way escaping it. There are those who try to love. But can only pretend.