It was always understood that I would care for the surviving parent when either away. My moved in with me as my marriage was failing, and was a great support for me. We get along very well.I have met someone with whom I would like to build a life, something we both want. Our only obstacle is that he won't live with Mum. I understand that, but don't know if it is fair to abandon her. She has poor health and cannot live alone. I would always be there for her, spend time etc. I don't think she would understand. I feel guilty