I have a question,

It has been a year ago July2nd. that i came home to my husband. We went to the Love path workshop, and i have to say.. It was the best thing we did. Well when i first came home i had gained weight, I guess to hide and i could not get past the guilt of what i had done. At the work shop we discussed the importance of looking the best for your mate. After all we do that when we are dating. Makes sense. Well i have taken off 54 pounds, working on myself and trying to look amazing for him as well as myself. It helps to feel better. Well when i had the affair i had gone from 400 pounds to 160. I had reached goal weight. I have worked so hard on forgiving myself and dealing with guilt and condemnation for having not one affair, but 2. Dealing with the issues that contributed to me having affairs, past issues and all the guilt is hard, but necessary. I love my husband so much. I want to be as attractive as i can for him. Also taking care of myself will give me more time here on earth to be with him.
There was a comment made by him that hurt me so bad and i just do not know what to do. The comment was (I'm just waiting for you to have another affair).  That is the last thing i want to do.  What can i do to help him feel secure while i am trying to look my best? I thought after a year's time i would be past this. I guess i was wrong.  I know there is no perfect marriage. Nobody is perfect. I know we will always be learning and growing. I just want to know what can i do as a wife and a woman to help my husband feel secure while i am losing the weight and trying to look and be my best. Any ideas?