Milly is definitely a 1-person dog. She will be friendly to other people and greet them, play with them and even sit on their lap, but if I get up and leave the room, she will always follow me (even to the bathroom, where she will just sit outside guarding the bathroom door).
My sister stayed with me recently and Milly was sitting on her lap having a tummy rub after getting to know her a bit. She joked that "she's my dog now", so I replied, "Oh, really?", got up, left the room, and of course, Milly came pattering after me. Poor sis
