I’m a 44-year-old man. I have been married for 20+ years, happily, except that I feel denied a sexual experience I want. Oral sex. My wife won’t “go down” on me although I am always very clean. Sometimes I feel something’s wrong with me. Sometimes I feel something’s wrong with her. I’ve asked and she’s always said no. Now I have dreams of being with other women just because I feel that I am missing something in life and it will all be over before I get a chance to sample it. What do I do? Advice please.