We are starting to tell our ds about people in the family and relationships. My father left 20 years ago for a much younger ow and has had a family with her and never bothered keeping in touch with me other than an occasional Christmas card. My mum is v involved with us and we have grandparents on my dh side. How do I answer when my son realises he's 'short' a grandparent? I don't want him to feel insecure that people might leave. Thanks in advance.