There comes a time when one must let go of the past to move on. Cutting ties with the pain is power, because it makes one stronger. It helps for an even better future.
It does not mean that a life long friendship doesn’t exist, but sometimes it helps to keep great memories sacred. If one ghost you do not take it personal. Take it as a sign that they decided to leave your memory as a great memory, but had to move on to make things right.
Let go and let God find you a happy zone of your own by not stalking your past. Let it go. Peace.