1. You are past puberty 2. You value your free time 3. You dislike cheesy lines 4. You have suffered a real loss in life 5. You have a reasonable sense of humor 6. You don't enjoy a predictable story 7. You value your intelligence 8. The movie is wrongly classified as "drama romance", but it is really a romanticized, imaginary, phony, fantastic way that a teen or someone who is completely detached sees an adult life (a science fiction perhaps?). When you watch movies that are described as comedies, you know what to expect. But here, you are mislead into believing that this is grounded in real life. Well, it isn't. 9. You loved Hillary Swank in other movies and want to believe that she can distinguish a quality scenario.
Review of P.S. I Love You
