I love my girlfriend they way she is?

she is does have some meat on her bones, she is by no means fat. not by a long shot. I am very attracted to her. how do I tell her I love her they way she is. but how do I tell her if she lost weight I would still be attracted to her. she is trying to lose weight right now. but then she said why am I even trying to lose weight when I already get enough attention from you and you already like me they way I am. so then I thought she needed some motivation. so I said "I bet you would look even better if you lost weight." so then she thought that I was saying she doesn't look good now.

A: what does she want from me.

B:how do I tell her I love her either way, weather she loses or gains weight.

C:or is this just some no win situation.