Possession

I find it odd that Miles just suddenly dies when he acknowledges and sees Peter Quint, the ghost. I believe that Miles is possessed because of his strange actions dealing with the kids at school. He should not have knowledge of or be talking about the topic of things that seem to be sexual in nature, especially at his age. In the end, I get the impression that the governess is fighting with Peter for Miles. What seems to be something that the governess was protecting Miles from ended up causing him to die. He took his last breath as he sees the ghost in the presence of the governess.