FInally picking this up after dropped it months ago, and actually i have slightly different view after finish this drama
Months ago, i thought that the ending is unrealistic, it feels forced happy ending
in fact, after i finished it, it feels like sad ending to me
FL getting back at square one after trying to be tough in 2 prior episodes
but for me, it what makes it realistic
FL already grew up in toxic environment, namely her aunt, she always feels she is never enough of a person and then she met the ML, our manipulative, self-centered, flirtatious guy we wish we never met. So, rather than saying FL doesn't has character development, i would say that she is stick to being herself.
The 19+rating is not just about their explicit content, the story itself is for mature audience, it tells about how destructive it can be if person misinterpret lust with love, and it might give the younger audience the wrong idea.
Lastly, i dont think i would rewatch it, but for someone who plan to watch it, keep in mind this story centered around two broken people, so you might not get ideal result at the end