Looking for both logical and emotional reinforcements, from casual acquaintances to intimate partners, and any orientation if not especially, everyone matters.
Frame it as a “friend” if you’d like, but I would like to know what made an impactful impression on you personally, above and beyond any hypothetical.
My go to logical line is to point out the absurd number of people there are.
“I’m fat.”
“There are literally millions of people in the world who wish they were your weight and there are millions more that are way heavier than you. You’re doing alright, be nicer to yourself.”
Sure two million is technically a small rounding error in a population of eight billion, but it’s true enough. I guess this wouldn’t work in some extreme cases, but I’ve had decent success with it.
I don’t have any canned emotional points though. To connect with someone emotionally you have to let them know they’re heard and understood and try to relate your own experiences if you can.