Unimagined Magnetism

I've seen it many times - I'm in an empty waiting room reading a magazine, someone else joins me and sits right beside me without saying anything when many other chairs are available; I'm sitting in an airport waiting to board a plane where people allow for each other's personal space, someone always sidles up and sits right next to me; I walk down the street minding my own business, people walking in the other direction veer and collide with me when there is plenty of walking space; people tell me things they don't normally talk about to anyone else all the time; friendly dogs come by my side and lean on me. I don't know what it is, but I get kick out of it sometimes.