¿Qué significa Forbidden love is the best kind of love. Right after tender and jungle. ?

See a translation

There used to be this song called "Jungle Love" by Steve Miller. Here's a certain interpretation of it :"
~~~He ends the song by discussing "a world of illusion" and "a scarlet conclusion", signifying that while Miller acknowledges romantic notions to exist, he believes biological forces that play the dominant role in human sexual behavior. The title of the song thus takes on a different meaning as the audience gleans that Miller believes the modern conception of romance and sexuality to be "jungle love" dressed up with illusions and dreams.~~~
So basically "jungle love"would be some kind of mixture between illusory and carnal
I'm giving you a link for the song to hear it:
https://www.youtube.com/watch?v=UUziIf1Fdks
"Tender love" is your usual affection expressed mainly through gentleness and caring.
So we have love, summarized and expressed, in three types of romantic affection according to the author of the statement.
Forbidden love, which if not allowed, frowned upon most likely by society.Again its a matter of perspective what you find as "forbidden" nowadays. If you look up sections in a reading site called Goodreads, you will discover that tagged under this term are mostly "step-brother-sister (or other blood type of ) relationship, teacher-student relationship". There was this romance, I stumbled upon once, between a woman who seduced a priest, which was also flagged as "forbidden". So it all come to opinion and morals, I guess...Also transgressive love could be forbidden.