As many people as there are opinions.
I know that in this fairy tale the deep erotic sense is beautifully camouflaged. I am not saying it is true, but as an option, it has a place to be.
The offended fairy declared that the Royal daughter would fall in love when the time comes, and in disobedience of parents will enter criminal communication with the person with whom the noble family cannot be related in any way. Of course, this prophecy plunged into depression ruling couple. The father began to take precautions, but, since he was used to solving all issues in an authoritarian way, he decided to apply the tactics of prohibition in this situation. Instead of informing your child, teach your daughter to cope with strangers and not to succumb to the impulses of love, parents just shut up the great mystery of life. In addition, life would still gave its sprout. There was an old lady pimp. Perhaps she was even conspiring with an evil sorceress. The old woman slipped her granddaughter-Lovelace to the Princess, who told the naive ignorant girl all sorts of beautiful words, seduced her, and was such. In addition, girl from chagrin fell into in unconsciousness. Alternatively, in a long swoon. Only the power of parental love and care of her relatives brought her back to life.
It also becomes clear why the beauty was destined to sleep a hundred years: it had to be replaced by three generations, to pass three times for thirty-three years, so that the popular rumor grew true and forgot about the shame of the king's daughter, about her unscheduled loss of innocence. This story is really overgrown with legends, and the castle itself - impassable forest.
This quite banal situation was shrouded in mystery, so it became so attractive for a passing knight. It was even said that an Ogre lives in the castle. Of course, all these mysterious interpretations only fueled the curiosity of the wandering Prince.