I would suspect that he can't say what he wants for dinner because of diminished executive function, so common in this disorder. that's why the binary options,.. either stew or spaghetti work better.
I agree with this. I would also add that other factors could include the lack of emotional maturity that is necessary to make adult decisions such as meal planning, and also the expectation that "love" means anticipating and meeting his needs/wants without him having to specify what they are.
"If you love me, you will know what I want/need and I wouldn't have to say it."
My ex did this. He did not want to be asked what he wanted for dinner. He expected me to take on the sole responsibility of meal planning and cooking, yet he also expected me to read his mind and make meals that he not only liked, but was "in the mood for". If I could not do this (which I couldn't, nobody can do that) he saw it as evidence that a) I didn't love him, b) I must be thinking about somebody else which was distracting me from figuring out his wants/needs, c) I was selfish and cared about no one but myself.