How can I help my boyfriend get over my rape?

I was repeatedly abused as a young teenager (7 years ago) and told my boyfriend of over a year. He loves me and supports me, but our sex life has really suffered. He says it upsets him to know someone hurt me and he has trouble separating what we do from what he did to me. I do not have trouble with the distinction, but I don't know how to help him get over it. Any advice? He doesn't want to see a professional.