It’s really hard to explain this but most men don’t know what their wife likes in bed. Men don’t typically do very well with criticism/women telling them “what to do” and at the beginning, she liked you a lot so being turned on was easier. After a while, she hoped you’d improve, or at least seem interested/notice what she actually liked and how she was changing, but you (possibly) were doing your same boring old thing and she was politely faking orgasms to get it over with so you could save face. Now, you actually resent her for putting up with unsatisfactory sex for years, and you probably want oral (which she gets nothing out of and you don’t do the way she wants/women don’t want a man who’s irritating them down there, acting like a hero) . So, there, I saved you thousands in therapy.