Fat people are beautiful, if you're fat and struggling with self-image, just remember that you are fine just the way you are, and nobody can take that away from you.
The only real concern should be about physical health, but honestly, that's nobody's business but yourself and who you choose to trust. By the way, dieting comes with greater long term health risks.
If you're fat, you're beautiful too, and there is no need to qualify it, and you deserve to be loved.