My girl was the exact same way.
Only beef was steak, only chicken was thighs..
NO greens of any variety, if it's green it's a no.
No creamy soups, no mashed potatoes, nothing "squidgy" as she put it.

And I totally understand where this guy is coming from, it feels like you are the only one putting anything in to the relationship.. you're just there to supply her needs and wants.

In the end I just had to break it off with her.
The final straw? When I realized she hadn't called me by my name for a year.. always baby or babe.
Shit's infuriating after a while y'know?