I feel like this needs to be said:

You are beautiful. Screw society’s idea that you have to be skinny and have a thigh gap or 6 packs. You’re beautiful in your own unique way.
You’re worth it. Don’t say nobody loves you because that’s a lie, at least one person (me) loves you. Your life is something that cannot be replaced. You are important and beautiful, not worthless and ugly.
I love you x