Leaving home

Harrison has announced his intention to move in with Carla, one of his day-carers. Carla has looked after him for 2 years, and leaves today to go on maternity leave. Harrison has decided that the way to cope with her loss is to move in with her and her new baby. He would like the baby to be a boy, and to grow up very fast so that it becomes his big brother. He has also started asking me to pull my hair back in a pony tail like Carla (and when I do he sighs, looks lovingly at me, and says "Hi Carla").... I'm trying not to take it personally.