Unsatisfactory sex life, my husband asks me to find someone else

My marriage is like that of a single person.

Before marriage, I knew nothing about the matter between husband and wife. Our sexual life after marriage has always been unsatisfactory. I originally thought there was something wrong with my body. Until the recent one or two years, our marriage became a sexless marriage, then I realized that the problem was on Shang Rong. Sometimes when I take the initiative to ask for it, he would make fun of me and call me "nao mao", meaning that he can't understand why I have such a great need. I am originally very modest in this aspect, so after he said that, I don't say anything anymore.