50/50 rent makes sense if it is an ideal living situation for both of you. It seems to me that you are making a great deal of sacrifices so I think if you are doing the cooking/cleaning and utilities, if I was him I would take that deal. Seems reasonable enough. You’ll be spending more on gas and stuff so the only incentive for you to live there is because of cheaper rent, which if you’re paying 50/50 ultimately you’re taking a bigger financial hit for no apparent reason

Are you trying to get to a healthy weight? Because if you are he is bringing up a valid point, you need a balanced diet and a good amount of protein. Carbs are just sugar. I know for me if I don’t eat enough protein and just carbs I get tired way quicker

It’s their house though, you can’t expect a complete change in routine right away. And in regards to respect, the op should respect the fact that it is their partner’s house not theirs, and should not demand they bend over backwards to accommodate them in every way possible. It’s a two way street.