I definately get treated differently by everyone.
In my school, people I dont even talk to, will stop me and say . " Omg! you're looking SO good " ..
My good friends are all happy for me, even though sometimes i do get a hint of jealousy.
My family, thats sort of a whole different... area.
They aren't happy for me. They aren't supportive, and given a chance to put me down, they do.
But, hell, they aren't gonna stop me.

I'm on fire!
As for the opposite sex.
I do... I mean, I dont know if guys stop and look, I'm not that thin yet, But for example, an old friend I would hang out with before i moved, and while I was weighin' in at my heaviest, after about a year or more of only occasionally seeing him, he asked me out.
I never said yes. I mean, was it because I lost weight that he finally found me acceptable to be his gf? If so, I'm not lookin' for that type of guy!
and of course, the older men, friends of my dad will say. " BOY! if i was your age and single!" =)