Well... I'm a pretty big girl and I can understand that many people don't find chubby or overweight people sexy or pretty to look at. People are different. Then again you have them who thinks "the bigger the better" and that wouldn't be with a person who is skinny. And some just fall for the person - no matter of size.
BUT... weight shouldn't matter to get to know a person. People shouldn't judge other people so fast.
(I know my English isn't very good, but hope you'll be able to understand what I'm trying to say)