Most Helpful Guy
Are fat guys that bad? I don't want to assume, but I get the feeling that you feel you're entitled to someone thin and attractive. If someone who's overweight themself doesn't find you attractive, I'd tell them the same thing: stay in your lane.
Overweight partners are undesirable by both genders for a multitude of reasons. I'll agree, some people have egregiously high standards but overall, it's not a bad thing for people to want fit and archetypally attractive1
Most Helpful Girl
I know plenty of fat girls who found guys who love them and find them attractive. Anyone who is vain enough to let that stop them from being with you isn't worth the time. Be patient, there's someone for everyone.1