No, its not a phase. Ben is almost a year now, and he is the exact same way. I can't leave the room without him noticing and running to follow me. I dont mind it, I love that he does it. At first it was really bad to the point that he wouldnt even go to my BF, but now he can stand to be away from me for a short while and play with my BF. But he never follows him, only me. I'm not sure that there is a solution though! You have a buddy for life now