If the person who died was the connection for you to others, those relationships may not remain the same in the future. The bonds may be insufficient to support a future relationship without the deceased.
While some people will support you well, other relationships may change because some people do not know how to be with you in your grief. Others may create unintentional pain by speaking insensitively or hurtfully. And some relationships may simply disappear.
Grieving the loss of these living relationships may be an unfortunate but necessary part of your mourning.