My DS has got very close to a girl in year 11. He is a sociable and bright boy and really doesn't see a problem with this relationship, although my DD (aged 14) thinks it is really strange. They hang out at school and have also met up in town and are constantly chatting online. My DH also thinks that it is odd for a girl of that age to be interested in a friendship with a 12 year old. Am I thinking into this too much?