I don't know if you have ever heard of Sexual anorexia ? But this sounds like what your having .
If your husband dose not see it as a problem then you got big problems , because this means nothing is going to change and you have to just go without sex .

Marriage is 50/50 and if he's not doing his part then it makes it harder for you and you will feel cheated in your marrige .

You really only have to choices as he isn't willing to change ..
Deal with it or leave him .
But it sounds like you married a friend not a lover and sometimes marring a best friend is not always so great there is no passion .