LoopsnBloops:
I encourage my current, and quite plump, girlfriend to eat and grow fatter. She likes being able to turn me on with it but is otherwise uninterested which makes me a bit sad. All that being said I completely support her losing weight.
I'm in a similar boat. I feel like if it turns out your partner isn't into gaining, them being fine with you talking about it and them occasionally using it to turn you on is pretty much the next best thing.
