Pumpkin

I saw the movie Pumpkin about a month ago, and I'm still not sure how I feel about it. It's definitely one of those movies that wants to get you to think, but I'm not sure if I totally respect it for that, and it purposely leaves some things ambigous. The bASIC BACK STORY ON it is soriety girl with a perfect life winds up/is forced into a friendship with a "special" boy, pumpkin. Exactly what is wrong with pumpkin is never really revealed in some ways and its hinted at that his problems are caused in part by his mum needing him to be weak after his father died. Has anyone else seen this flick?