Nem said: Heres the secret to a good relationship: You solve your problems together. |
I agree with this. You can help her in this situation. You said she obviously knows she's fat (and she probably doesn't want to be) so why not try to help her instead of leaving her on her own? Don't be a jerk like that, just try to help her.
Mention that you guys could work out at the gym together. I personally enjoy working out with people, maybe she will too.