Sexless Marrige

In the beginning everything was great. We started going out almost every day. Eating out a lot made us both gain a little weight. We got married and enjoyed our first year 1/2. But I started noticing that sex was rarely. We gained more weight eating out and not going to the gym anymore.I started fighting because every time I was in the mood, he would always give a but. Saying that he was tired or other. I checked if he was cheating on me but nothing pop up in his stuff. I started to feel like I was not cute anymore for him. The sexless topic went on for a year and a few days ago he told me that it's because of my weight. He said that it was a problem for him and that he thinks that I would never loose it because I am not consistent with anything.This broke me. I am going to the gym but I feel so disgusted with myself. I don't want to do it for him either because he doesn't deserve it for that. But it is a painful thing to hear...