Hey there,
Weight doesn't make up who you are, at all. What matters is what's on the inside, and you never fail anybody. And as far as your boyfriend goes, I believe he's telling the truth, I know you are a beautiful person, inside and out. And people do love you. You are loved more than you think you are.
And about the eating disorder, I think it depends. Most people over-eat at some point in their life. I over-eat all the time, but that doesn't make up who I am. But many people who do, don't have an eating disorder. If you are really worried about it, I recommend you talk to a parent, a close friend, or maybe even a teacher at school...somebody you trust that will point you in the right direction.
PM me anytime.
Always,
Liz