Hi. I am new here and this is my first post. I have a 1,5 y.o. german shepherd named Nero and we had him since he was 2 months old. There are 3 adults in our house, myself, my husband and my brother. I spend the most time with him as I am self employed and work from out of house. My brother also works from home so Nero has never been lacking attention. He is almost never alone. Even though he shows affection and obeys all three of us, I noticed that he is attached to me the most. It makes sense since I am the one who takes care of him on a regular basis such as feeding, walking, training, etc. He is an awesome dog and we never had any issues that we couldn't have dealt with. Until now. So my mom came to visit from abroad a couple of days ago. He has never met her before so she was a total stranger to him. At first he barked at her and seemed somewhat intimidated by her. I said "NO" to his barking a few times and he stopped. My mom, being very fond of dogs, started to interact with him, pet him, gave a few treats and showed a lot of affection. I was relieved that they seemed to get along as my mom is visiting with us for 3 months. But I didn't anticipate what happened next. It's been only 2 days since Nero met my mom but he already follows her everywhere and seems "all over her". If I call him, he would come but then turn around quickly and run back to Mom or keeps watching her at all times. I realize she spent the whole 2 days with him, playing and cuddling but I can't help feeling "betrayed". Is this a normal behaviour for the dog? He has never done this with any other outside people, but again, none of them was as affectionate with him. Sorry for the long post but I don't know what to do, should I just accept the situation or try to do something? Is it just me who is irrational and too sensitive? Thank you for any feedback or advice.