I've been a binge eater all my life, and it'll be something that I'll likely struggle with for the rest of it. There is an aspect of self-medication to it; we learn to associate feeling full to being happy, even though it's a false correlation. The heavier and more out of control one gets, the worse one feels and the more then that one feels the need to overeat.
Like other eating disorders, it isn't rational, and generally doesn't respond well to rational thought. Supporting her by going with her to the gym and having healthy food around is a good start, but she quite likely needs professional help. Such things are usually symptomatic of bigger issues.
It's hard to be in a position like yours: you want to help her, but it's hard to be attracted to someone who is doing something so unhealthy to themselves. I don't think that you're necessarily being shallow, and I think that you're doing great in trying to support her. Therapy can help with the underlying cause, but it is an uphill battle. Addicts can quit their drug of choice; binge eaters have to still eat, just reasonable amounts.
Like other eating disorders, it isn't rational, and generally doesn't respond well to rational thought. Supporting her by going with her to the gym and having healthy food around is a good start, but she quite likely needs professional help. Such things are usually symptomatic of bigger issues.
It's hard to be in a position like yours: you want to help her, but it's hard to be attracted to someone who is doing something so unhealthy to themselves. I don't think that you're necessarily being shallow, and I think that you're doing great in trying to support her. Therapy can help with the underlying cause, but it is an uphill battle. Addicts can quit their drug of choice; binge eaters have to still eat, just reasonable amounts.