Man this kind of post makes me angry! I'm sorry your partner says these cruel things to you....knowing that there is probably a sensitive area that would make him feel bad if you constantly pointed it out!

So it could become a "war", find your partner's weakpoint & exploit it. Kind of an eye for an eye theory.

Or discuss this area with your partner & how digrading it makes you feel. See if there is empathy there.
I'm sure there are other options, but you need to decide what is best for you & you alone.

If you lost weight....how much would be enough??