Ideally, you could just get rid of him and lose a whole lot of weight and agony, but you probably love him. Allow yourself to love the person you are. You are after all only thirteen pounds overweight. A lousy thirteen pounds.
Is he in tip top shape? If not the next time he tells you that, just nag at him for the same thing! also, You need to be honest with yourself, do you feel that you are fat? or have become so? You don't seem over weight by much but the weight distribution might be unbalanced. Does he do these things in public or infront of anyonelse? If so, you should have a talk with him and let him know how you feel about the costant insults, dont bottle it up let him know that he's hurting your feelings but if you don't feel fat, dont put yourself through any trouble for a pain inthe butt.