No sparks😢

Ive been seeing my boyfriend for over a year now but am literally not sexually attracted to him, I get so depressed when its play time and I just don't know what to do. Sometimes I go to him feeling so horny am almost exploding but the minute we get down to it or I think about it I loose interest immediately. He is crazy about me and treats me like a princess, also every other aspect of our relationship works just perfectly and I think in some way I do love him. The only thing I think could explain my not being excited by him is cause I don't like his body, he is alooot on the bigger side I've tried to overlook that fact coz I really like the person he is inside but am frustrated by not being able to enjoy sex😞😢