a little bit hard to swallow

My fiance came to me this morning proposing a huge change. A weight change. He said he needs to work on his, and I need to work on mine, and we need to work together. I understand that. And he's right.
I've never been very good at accepting any kind of criticism or acknowledgment of my mistakes. I've always taken any comments about my weight very hard and very personally, its just part of who I am. I had my arms crossed the whole time he talked to me. He observed that, and so I uncrossed them. But still, there is something that is not sitting right with me. He talked about behaviors that he said we both do, but they are really things I do. Like "being lazy" or "waking up late" or "keeping junk in the house". And by the way "junk" to him means anything that is not vegetable or fruit. Its hard, really hard. I don't think in the last place he lived that it was completely "junk" and "fat" free and to expect me to be an amazing fat free chef, as well as fiance, is a really large burden on me. I understand the struggle he has. I have avoided it in every possible way. And I want to change, and this kick in the pants is definitely what I needed. But I'm sensitive, and sometimes its hard to hear, to "digest" if you will when your partner tells you about all the things you have been doing that are "lazy" or are making his or her life harder. That's never something that I consciously wanted to do.
So now I'm upset. Kind of emotional. I want to either eat a gigantic tub of iced cream or cry or something. So I think I'm going to get some clothes on and go to the gym. I hear the gym is good for releasing negative energy.
And I guess I never realized how hard relationships can be, and what compromise is, and someone can love you and find fault with you at the same time, and that's okay. I have a lot of learning to do.
And I guess if I need a reason to lose weight, not that I do, because I'm very overweight, but getting married and having a future with someone you love is quite reason enough. And that I'd like to be able to shop at Urban Outfitters again.
Heeheh.
Well, I'm off to face my demons. Wish me luck.