Speaking from experience , if you not meaning you , particularly , but in general are not sexually attracted to your partner , it pretty much goes down hill from there . I met my previous partner and was attracted to their personality but not their looks . The sex we had , when we had it was good . But , towards the end 3 YEARS later their personality wasn ' t even that good anymore and we never had sex , the thought of them physically . disgusted me . That was when I knew we were over . I also knew they deserved better than that . And so do you . The person you are with should love you and your body equally . They should find every inch of you to be beautiful . By sticking around with him , it would be like you are settling . If it ' s not even your thing to be monogamous but you are doing it for him , and the sex stays bad , you could grow to resent him . And you don ' t want that to happen . I think you should let him go , even if it ' s really hard .