Comedy? Romance? seriously I don't think I can trust the rating here anymore

Rating: 1/10 (3 June 2016)

I've created my account for many years and it's my first time writing a review. I was looking for a romance movie from a list provided by IMDb and found this movie ranking at a relatively higher place. The plot was pretty interesting and innovative so I decided to watch this movie.
However, the movie is so violent that it was a psychological torture. I couldn't really laugh at anything in the movie even if it is counted as a "comedy". Not to mention the romance part.
I just hope that a sign could be placed on every movie like this to warn people about the content. This is just too violent and I couldn't stand for that.
I might be lack of any sense of art to admire or appreciate this movie. It's just too disappointing.