Mine insists on living on my right side. I don't know why, but he never moves out of the right side. He has been there since the beginning and has no interest in my left side or even the middle. He doesn't mind kicking the left side, but he will not move his whole body over there. Every now and then he has shifted when he is awake and moving so much, but he always snuggles back into the right side when he is done.