Sex issues in relationship

My partner ages ago said he feels that there are problems in our sex life: the frequency and the fact that he thinks I don't want him to touch me.

This is totally not the case and I was majorly shocked by this because I didn't have any idea there were issues.

We talked about it and worked on the problems.

However, two months later, we have the same problem. He said it must just be "residual feelings" and "there's nothing he would change" but it's becoming an issue.

Anyone have any advice?