Snoopy - As someone who has been/is there myself, I can totally empathise with you. In some ways (e.g. my depression), dh is so supportive. However, where sex is involved, he finds me unattractive sexually when I need to lose some weight. I too am a size 14. I am not happy with my size as I prefer being a 10, but I have been eating really badly for a few months due to depression and family problems.
Because I am so depressed at the moment, he is not mentioning my weight, but he normally will.
To be fair to him, I was a size 8 when I met him 18 years ago and it has only been in the last few years that I have ever got over a size 12. He has never had a really high sex drive anyway, but it definitely gets more regular when I am slim! He admits that the way he feels is shallow, and says that he does love me (i.e. the person inside). He says that I always make the most of myself by doing my hair and make-up well. He just doesn't fancy larger women.
We had a big chat about it once and he made me see his side more. I think men need the 'visual' side with sex, whereas women see it as an expression of love, so don't worry if their man has a beer gut or bald head.
That is not to say that it doesn't hurt me to be rejected, and I stopped trying to initiate sex. TBH, being on ADs has decreased my libido anyway, so our drives seem more compatible now . I hope your dh can learn to realise how hurtful this is to you, and reassure you of his love anyway xxx