Hi, sabastious.
This is an interesting topic.
Well, since I do not speak English, I cannot explain using a technical term (difficult words).
In the Greek text, that sentence "God is love", there is no definite article in the word "love."
So, although the explanation "God is love" is correct, it is not "love is God" (love = God).
And the English word that "love" is "agape" in Greek.
That is the "love" exceeding our "emotion/feeling."
Therefore, the word "Love your enemy" does not mean "Like your enemy."
Well, in my opinion, I think that fundamentalists cannot explain about this question correctly, IMO.
Real "enemy" is inside/within us.
Therefore, that does not mean in fact "love your murderer and terrorist."