Love the movie
It's a great movie which covers many common ideals, including:
Grief, aspergers, love, work, bullying, self-harm, jealousy, drugs, depression and disabilities.
I would highly recommend this movie due to its originality and thoroughness.
There are many positive messages in this movie, but the most important is 'to go with your heart and not what others expect of you.'
Swearing is mild and only occurs around 4 times.
Intimacy consists of only kissing but other references are implied.
Self-harm occurs once.
Drug use occurs once but there are several more references.
There is one graphic scene from a car accident from which blood is shown on a mans face which may be distressing.
I think that to understand this movie you need to be over 12 due to the deep storyline.