I don't think you are over-reacting at all. You have every reason to be upset with him. What you need to do is ask yourself if its worth changing yourself(losing the weight) for this man? Do you love him enough, to do that to get his attention again. He should love you for who you are, and not how much you weigh. I hope he turns around soon, because the way he's acting he's just pushing you farther away, and he's going to lose you, and I know you don't want that at all. I wish you the best /hug.