In my travels in the blogishere, I come across significant others eating garbage/carbage foods in front of their supposed loved one. Now if you are a significant other and see your partner losing weight, regaining their health, being happier, more energetic wouldn't you at least have the courtesy to eat somewhat like them when you are actually eating with them? You could always revert to eating garbage at other times if that is what you prefer to do.
I am a zero tolerance person I'm afraid. If my partner didn't respect my wishes they would know about it. Yes I'm a dictator and maybe that explains why I'm single, lol. But I believe in this way of eating so much that I figure anyone would benefit from eating this way. I can't see myself hooking up with a vegan for example.
Dictatorships aside, it all boils down to respect. If your partner is struggling with weight and health issues, it's only a matter of respecting their choices and not trying to derail them.