I'm jealous! I do wish my fiancee would sleep nude. I could understand if it was *really* cold in the room, but the body heat from two nude bodies cuddled up (say, in the spoon position) is quite comfortable and nice. I don't buy my fiancee's excuse of it being cold because there were plenty of cold nights in winters past where she slept nude. Now that I think about it, I forget what excuse she uses in the summer :-)
I have actually pointed out that I am making a request of her, but her response is 'why are you making me do something that I don't want to do?'. She doesn't really see my request as a tiny thing, but seems to think this is a major request. I believe that a significant part of it may be poor body image (she has gained 40 lbs+ on her small frame in the time I have known her), but it really makes me feel upset that she would sleep nude in the past but not now.