Can't live like this anymore.

I feel as if my husband and i have just completely lost our spark, our passion, our love. I'll admit, I was never truly attracted to him physically. But that aspect didnt bother me. He was, and is still very much physically and sexually attracted to me. He, like any normal partner craves physical affection and sex. I on the other hand, am repulsed by sex. Especially with him. I hate how brutal that sounds, as he seriously isn't a bad guy and I hate to speak ill of him. He takes care of me and loves me more than anyone ever has. I'm sure it all stems from my past sexual abuse, but I truly thought I'd gotten over it by the time we married a year ago. Up until about 6 months ago I was fine, i was able to suck up my feelings and provide my husband with the physical relations he craved. But i just cant do it anymore. I'm so tired of feeling like an object. Just used and then put away on the shelf. I've explained my feelings to him several times. But he doesnt seem to really understand. My parents are very solid Christians, so whenever I explain my situation to my mother, she just tells me to suck it up and do my duty as a wife. This problem has changed our entire relationship. I am constantly disgusted/irritated by the little things he does. We argue all the time. We are both depressed. But we both seriously want to work this out, because in the beginning, our relationship was wonderful.