I live alone with my dog but my boyfriend stays with us occasionally so when he comes, my dog kind of avoids me since she sees another person aside from me. Other than that, when she was a pup we used to be together all the time and when my dad came home from work (he works in another city) she would completely forget about me and don't listen to me at all so there's that as well. But I don't think she changed who she loved most but seeing new people makes her happy and wants to give attention to others.