Lisa, this one line hit me right in the solar plexus. I’m sorry you are suffering. This method of cutting someone off, or “ghosting”, is hideous. At least you have seen your son in a happy, healthy relationship. Whether it was from lack of maturity, or untold circumstances, ignoring a connection is never a solution -excepting perhaps in cases of abuse. Hopefully getting this all down and out will be the catalyst for relief, and release.