You have every right to feel annoyed & hurt.
It can be really hard when one partner wants to be healthy & change & the other doesn't. While it feels unsupportive, and it is, it's also about resistance. I've seen people be downright mean-spirited & resentful. The person wanting to eat healthy is viewed as an adversary to be sabotaged. Indulging loves company to make the indulger feel better about his/her unhealthy choices.