Please pray that my husband stops making constant crude and inappropriate sexual comments and jokes every time he speaks to me lately. He's been showing signs of dementia for a while now, and I just need him to be supportive because I'm going through a medical crisis and am having a long PET-CT scan Tuesday. He is being downright mean to me the last week for no reason. Forty-nine and a half years we've been married, and we have gotten through so much, and he has helped me get through the worst of times we've shared, and now he doesn't seem to even be able to be supportive or helpful at all. Just talks about sex all the time out of the blue. I really just want to kill myself if he can't stop mentioning sex every time he talks to me. I feel so completely alone for almost a year since he started acting senile. I need to feel that he will be here for me, helpful and loving. I've done everything for at least 35 years now, since he injured his back in 1986. He takes advantage of that and has just shirked his responsibilities in our partnership.