It is really confusing, isn't it? That "fine line".. and being on it all the time. Don't ya just wish that "food" was just simply that "food" and nothing else? That it is a source of nutrition - not something to be thought about and counted and debated..
And really, your boyfriend is telling the truth - cause he is attracted to you.. not your weight... please don't discount what he is telling you..
I don't have an wise answers for resolving the problem with eating that you probably haven't already heard.. except possibly a good support group or therapy.
My own battle with an ED continues.. I "win", I "lose" a battle but ultimately want to "win" the war.
So, I too continue on..
Welcome to PC... it is a wonderful place.