If the idea of loving those whom you have been taught to recognize as your enemies is too overwhelming, consider more deeply the observation that we are all much more alike than we are unalike.
When you are in love you know no fear or hatred. when you are fearful there is no possibility of love or hatred. And when there is hate, there is only hate.
Usually adult males who are unable to make emotional connections with the women they chose to be intimate with are frozen in time, unable to allow themselves to love for fear that the loved one will abandon them.