I get it, OP. A few years ago I lost six stone (put it all back on) and people were so different towards me. The worst was a friend I hadn't seen for a while was totally gushing over how great I looked, asking me how I'd done it and exclaiming on how awesome it all was, and I felt utterly humiliated and just wanted to walk away.
I'm a person, not an object. Standing there 'admiring' my body from different angles, commenting on it as though it's there for your appreciation or disdain, talking to me as though I'm somehow not a person, just the means of hauling this body around... It's dehumanising and totally humiliating.
I know that people are just interested/jealous/impressed, but I wish no one felt entitled to speak about my body that way.
The people who said things like, you look gorgeous however much you weigh, or, well you look great, but then I always thought you were beautiful - those were lovely compliments that I appreciated.
I've put all the weight back on now, anyway. So presumably all the people who thought I looked so much better now think I'm a lazy useless cow. But the people who actually know and love me really don't care what size I am and have never treated me differently. I wish I'd known, when I'd lost the weight, to shut out all the other noise and nonsense. I definitely wasn't psychologically equipped to deal with all the attention on my body, and it felt very unsafe.