self-confidence

i want to preface this by saying this is entirely my own personal issue and am simply looking for advice for myself, not any bashing on my fiancé. (i've gone to therapy multiple times and none of my different therapists have helped address this specific issue so i'm hoping some advice from anyone who has gone through something similar will help.)

anyway, about a year and a half ago, my fiancé admitted he had been hiding a porn addiction throughout our entire relationship. he went to therapy, i went to therapy, and we addressed the mistrust there and have improved a lot. one thing i have been unable to improve though is my own damaged self-image. i don't feel sexy anymore. i've learned that his fantasies are of pretty much the exact opposite of me (which is fine i guess, but i think everyone deep-down wants to believe they're included in their partner's list of fantasies) but it's just made me feel like garbage knowing that for several years of our relationship, pictures/videos of me weren't ever enough when i wasn't around. i feel like i need to change my body type and i don't like taking my clothes off in front of him anymore. i just feel ugly and uncomfortable. i know he's choosing to marry me so obviously he sees something he likes about me, but i just feel like i'm not enough and it's making me so unconfident. i just want to enjoy sex again and not think the whole time about how dissatisfied i think he is with my appearance.