I'm trying to lose weight but boyfriend doesn't care how I look, but he is getting there too???

Within this past summer I've putt on some weight. Enough that it bothers me and I want to tone myself back up again. But my boyfriend says that I look great and he doesn't matter how big I get that he will still love me. But in the middle of all this of me trying to get back into shape he seems to be one of my negative side effects because of the food around. If I don't see it, I won't eat it and so here I am trying to lose weight but he is getting a bit bigger as well with a little pot belly. Although I like his little pot belly I also know it's not healthy. Is there any way for me to help him lose weight with me without him really realizing that he is. Cause with his recent weight gain he isn't as ually active or in the mood with me as much even though he don't realize it. Any ideas to help him lose weight with out him realizing it? Anything to help me as well?