What is Christopher like and what kind of relationships does he have?

Christopher is a curious fifteen year old with Asperger's Syndrome. As a result, he has a hard time identifying with the people around him. He never lies and doesn't expect to be lied to. His relationships with other people are limited. Most people don't understand him. His father has adjusted himself to the way Christopher's mind works and lives accordingly. Siobhan, who is well educated in autism, reaches out in different ways with different methods.