help with lazy friend

[lilmiss]

my soon to be former best friend is driving me nuts.  all she does is complain about her weight.   im sick of it.  how hard is it to lose a few pounds.   i work hard to keep my weight down,  so should she.   she asks me if she looks fat and i say of course,  lose weight.   she expects me to lie or something.  she is the same height as me  and outweighs me by like 70lbs.   i am 5'6 and weigh 80lbs.   i have always kepy my bmi below a 14, even thru 2 pregnantcys,   am i wrong to want her to lose weight?   i mean  she wont even go on a diet.  she also ridicules me for having my kids on diets and exercise programs.  i will not be responsible for raising lazy overweight kids.  what can i do?