DEAR ANNIE: Please help me. I am in my mid-40s and have been with a man for seven and a half years. He has four children who I absolutely adore. His youngest is 12. We started dating when she turned 5. We have had them full time for the past seven years. I have gotten pregnant five times with this man. There were three miscarriages and two other babies who passed away due to complications at birth. My son had no lungs; he was born at 20 weeks. My daughter passed away in 2017 at eight days old. This man has never had a single conversation with me about any of the babies that passed away. But he…