Eating disorder

Well my husband told me about 4 months ago I was gaining weight. I was so upset. I had an eating disorder when I was in my teens and he knew this. I recently developed one again. After his comment of me gaining weight, he stopped having sex with me. I weigh 155 and am 5 9 so it's not like I'm over weight. I have always been skinny. I'm so sad over this. Ughhhh