Mine has become the dominating presence in the house! Has moved xbox, tv and lap top into lounge and refuses to move it! Is not violent but uses really fowl language. However, generally refuses to communicate with me or sister and when he does it is rude. Told me today he did not like me (mutual at the moment but I would not say it!!) and that was the first time he had spoken to me in a couple of days. Am happy to try anything...