About a month ago, my neighbours cat has been sleeping in my garden all day. My kids go out and pet him, he is really friendly and has created a bond with us up until the point where he tries to get into our house. He has been sitting outside our living room window (on the ledge) for the past half an hour, meowing at us. After we go out and give him some attention, he ignores us. He then comes back and starts meowing at the window. I'm quite concerned that he thinks our house is where he lives, is this the case? Are we being too friendly with him?