My wife is a control freak and uses sex....the lack of it...as a weapon. I went along initially, but over a period of time, started feeling very cheapened. We haven't had sex now in about 15 years....and she has become totally frigid...although, earlier whenever we did it, it was good...and she liked it a lot. What she didn't like was loosing control and after an hour or so, after we had a round of good sex....she would start getting angry with herself for having lost control of herself while we were making love. And then, for weeks, she would be angry with me too.