How do I get comfortable with being intimate after my SA?

It’s been about 3 years since I was sexually assaulted, after it happened, I didn’t have trouble being intimate with my partner until months after. To this day, I’m still not comfortable with sex. We were together before I was assaulted so we went from having a normal sex life, to never doing it at all. Sometimes I feel guilty as she obviously has those desires. How has others dealt with the loss of sex drive after an assault? Is there a way I can be more comfortable with it?