If we accept this, then loneliness can never be more than an illusion. We all know it is quite possible to feel lonely in the midst of a big crowd. But that doesn't mean we are alone. The same is true for the loneliness that follows a death. We may feel totally alone, but since God is with us, we actually are not alone.
Reality has a way of invading fantasy sooner or later.
That's what grief recovery is all about. Every bereaved person I have would give anything to have their lost loved one back. Accepting the reality that this is not going to happen and looking for something new is to find life after loss. But that doesn't mean they can't know happiness again. People who try to hang on to what has been wind up with a distorted grief reaction and often have physical and emotional problems.