So for real:
Similarities - You and I have a lot in common, married a virgin, to a virgin. I love sex, she doesn't. Has been an issue multiple times in our almost 22 year marriage.
What can I do about it. First, I would say stop talking about it. Stop asking her for sex, there really is not much less sexy than asking for sex. Even now after the work my wife and I have done, I find her asking me to have sex a turn off. I fight through it
but, if I didn't already really want to have a lot of sex, asking me would be a buzz kill.
Second, take it. I don't mean rape her, obviously, but convey your desire for her in your actions. Make yourself always in a condition for sex. Be clean, shaved, whatever it is that she wants you to be. However, don't obsess about how you are all the time. it is a balance.
Third, take rejection in stride. Do not pout, do not huff. Approach her, kiss her, hold her, but if she doesn't want it, back off and go about your business. Do not run away and hide, but don't act like a child.
Lastly, spend intentional time together being close to her without putting moves on her. Sit by her, put your hand on her leg, hold her hand, etc.