Hi PB. People are funny creatures sometimes. When their comfort zone is the least little bit shaking, by someone elses doing and not their own, they do react in the strangest ways.
I have only heard that comment once, and it was actually in a supportive manner. My friend said, "You have to be careful afterwards so you don't gain it back - it would be a shame to do all the hard work you are doing adn tehn have that happen!" Now taht to me was a perfectly reasonable thing to say - and it was said in a supportive manner.
Sometimes, it is maybe because I tend to pre-empt that dreaded comment, and when I am telling someone about LL, I say what we do, and then I add "and of course I must do a lot of mental work as well so as not to fall back into my old habits, which I know with certainty will never happen - because I am choosing NOT to let it happen." They have no argument for that!
People get used to us being fat and they get comfortable with that. When I was younger, I had a few friends in relationships who used to tell me their boyfriends really liked me and trusted them to go out with me any time, unlike some of their other girlfriends who they felt would lead her astray....etc. It made me feel good, then I would think "wait a minute - they only feel safe about her being with me because with me around - we couldn't pull any boys anyway!! Who'd be interested!!?" (Glad I am silencing that old negative chatter. It had no idea what it was talking about anyway.

) SO there ya go.
People are gonna have to get to used to a whole now you. And me. And him. And her. And alllll of us doing this. Watch out world!
(gee whiz - I just read that back - and I sound like I am half-way in control of myself! LOL - Rather a new feeling too!)