DEAR ABBY: I have been married to a man I’ll call “Ed” for 15 years. We are seniors, but he is 17 years older than I am. I have three children from a previous marriage who are grown and on their own. I think my husband is gay but never came out of the closet. He watches gay porn and once confessed to me he had a fantasy about another man. For the last 10 years, he has refused to have sex and is always making excuses (“I’m old,” “I’m tired,” “Tomorrow”).