Loveing your enemy, to me that means that you have the unconditional love that God has for everyone, for well everyone.
Christ, even as they diced over his bloody clothes and laughed, said, forgive them, for they know not what they do.
We should all love everyone, even our enemies as brothers, sisters, and as we love our own children.
If in hitting you someone slips and brakes his arm, you should take them to the Hospital.
If a group of people jump you, and the next day one of them is hungry and has no money you should buy the person food.
the list goes on, every act of wrong done to you should be forgiven the moment it is done, and you should treat the person as if it never happened and you have been friends all your life.
Also this should not be done out of obligation but out of generosity and true love.