My partner and I have been together nearly thirty years. He was never as into sex/romance/intimacy as much as I was, and things got worse after he had a malignant brain tumor removed six years ago. After chemo and a stem cell transplant, he is now cancer-free. However, he lost all interest in sexual and romantic activity after his tumor was discovered. Three years ago, I risked bringing this up, as I still have needs and desires, and he told me he’s happy with how things are. I am not. I told him I want to be able to satisfy my needs elsewhere on occasion, very discreetly, and he does not want me to do that. We tried to be intimate a few weeks ago with “moderate” success. There were no orgasms, and after thirty minutes, we stopped. This past weekend, we were supposed to try again, but he told...