It's a small film, and a far from perfect one, but it allows her (Theron) to extend her range as no previous role has done.
Michael AtkinsonVillage Voice
If the movie works on its own insipid level, it's because of high-gear star power -- 50 times the captivator Dennis ever was, Theron is terrific at creating adorable intimacy with little help from the script or director and exudes more guileless élan than any of the film's many puppies.
He's (Reeves) not as good as he was playing a menacing Georgia wife-beater in The Gift, but he's an awfully convincing jerk.
Does neither of its leads any favors. But they fill their roles admirably, and then some. Time and again, in a movie that repeatedly threatens mawkishness, you can sense them gently steering away just in the nick of time.
Carrie RickeyPhiladelphia Inquirer
If Sweet November were a puppy, it would have rabies.
Roger EbertChicago Sun-Times
Passes off pathological behavior as romantic bliss. It's about two sick and twisted people playing mind games and calling it love.
This feeble remake offers little more than two pretty and willing leads who nonetheless can't hide their embarrassment over being set up as distractions to hide the film's thorough lack of coherence and appeal.