Little bit of strange, that this has comedy genre attached to it, when there is really nothing funny about this movie. Awkward - sure, stupid - maybe, but funny? Not really. It's mostly just a character study of a sociopath, but it fails at that too, since towards the end, you don't really know that much more about the main character as you knew in the beginning.
I still kinda liked the movie, I think if you are able to enjoy movies about sociopaths like for example "The Fanatic" , then you'll be able to enjoy this one too.