You moved into your current neighborhood 3 years ago, a year later you met Alice at a barbecue you hosted. The barbecue allowed anyone to walk in so you thought nothing of it. From then in Alice tried to get closer to you by finding any reason possible to talk to you. Some other neighbors praised you on this because Alice had been living there for 5 years and hadn't tried interacting with anyone. As time grew and you got to know Alice you eventually gave her a key to your house, just in case.