Hey there. You said that you had a healthy sex life with your partner initially but then things deteriorated... because he had a higher sex drive than you.

Was there more to that? Did something else happen around that time, or do you think it is mostly about his having a higher sex drive?

Does he notice you crying while you are having sex with him? How does he respond to that?

What kinds of pornography is he into? (I'm thinking specifically of sadistic / massochistic stuff and / or activities that you feel uncomfortable about)

Does he really want / pressure you to engage in activities you don't feel comfortable about and / or is sex painful because you aren't adequatly aroused or because he is rough or something?

Marriage councelling could help. There are programs that have been developed for when one partner doesn't enjoy sex anymore. Usually those kinds of aversions develop because ones needs aren't being adequately met. The aversions can be overcome but it will involve your partner putting his desires aside for a time and being more responsive to things that you like (e.g., non sexual contact like massage and then a gentle progression onto activities as you are comfortable with them).