My ex changed the locks on our house when we split up (after I had moved out). I didn't mind at th etime because I wanted to give him his privacy. He has now moved out of the house and I would like to buy it. As it is also empty, I would like to move in rather than pay for 2 properties while we try and sort out our finances. Problem is is that he won't give me a key and refuses to answer my questions on the subject. I know that I can legally break in and get access that way (and change the locks), but can anything stop him doing the same once I have moved in?