Sexless marriage

My wife started menopause early, at 35 she was diagnosed as peri-menopausal. By the time she was 40, she had passed through menopause. She refused hormone replacement therapy. In the space of a few months, we went from a normal sex life 2-3 times a week to once every 2 or 3 months. Like your wife, when I asked her about sex, she responded that she just didn't have any interest in sex "this is the way it is now, just get used to it." 15 years later, we are still having sex once every couple months, I still haven't gotten used to it. It hasn't gotten any better. I can't really see how she expects me to remain faithful while my needs get ignored. I don't do flings or one night stands, I got married because I wanted a relationship with one woman and now that she has made her decision to not try to meet my needs, I have a friend who fulfills most of those needs. Looking back, if I had known it was going to turn out this way, I would have ended it 15 years ago. I know it isn't good for my mental health, I have dealt with bouts of depression, and it isn't good for her either. Whether she sees it or not is a different story. She has become irritable and, in some cases, downright mean. I have begun travelling about 4 days a week for work and spending weekends at my hideaway. She will be financially independent in another year, and at that point, if we aren't divorced we will at least be living independent of one another.