Spoiler & trigger alert - the princess discovers
the true nature of the Frog Prince not with a kiss,
but by flinging him against a wall. Many of the other
stories are equally blunt, forceful, or realistic
for the times they came from.
Of note is the modern excision of the last phrase
from the closing formula:
"And they all lived happily ever after until they died."
I think this is true of English speakers. In German everyone knows the standard phrase "und wenn sie nicht gestorben sind, dann leben sie noch heute" ("And if they have not died then they are still alive today.")
It's a sufficiently well known meme that people use it regularly in jokes.
Edit: added quote for clarity
To me the most familiar closing formula is "und wenn sie nicht gestorben sind, dann leben sie noch heute", which is quite interesting to think about really: what does it tell or suggest to the listener?
Thank you both for the German formulas - there are
examples from many languages at: