Although the movie seems not credible sometimes, these things DO happen, and I guess this is the scariest part. If we just shrugged off this film as an overdramatic teenage drama, we'd make a mistake, in my opinion. I wouldn't say that the characters were developed brilliantly and without any flaws, but they were strong enough. Although in some parts it seems that they shouldn't be feeling and/or doing what they are, if you really think about it, you'd understand. This film makes you think, and also re-evaluate your own life and attitude. And that's what is great, isn't it?