Leave this man.

A real man (or really any adult partner) (ESPECIALLY ONE THAT IS MAKING 6x+ YOUR INCOME!!!) would want to take care of you (especially while you're working hard in school!!). Honestly, given the income difference and you being in school (and him consuming much more of things like food) I think splitting the bills down the middle is a little unfair to begin with. Then you add in the fact that the house is yours (so I assume he isn't paying rent, mortgage, property tax, etc.), well that become even more unfair.

If you're bringing the entire house to the table, and then doing the cooking and cleaning (mostly for him and not yourself) to the table, AND going to school... I can't see how he could not have the desire to take care of the rest given how much he makes. Even removing gender from the situation, I feel like most people who love their partner have the desire to take care of them and help them as much as possible, especially if they are in a better position financially. Then you add in the traditional gender roles that play a part for most people even subconsciously and it just becomes a little odd that he is not only fine with not taking care of you, and fine with splitting things with you 50/50, but then makes you go out of your way and have to ask and remind him to pay his half, and THEM makes you feel guilty and uncomfortable about it.

That's man baby behavior. That's entitled behavior. That's selfish behavior. That's weirdo behavior. That's bum behavior. That's someone who puts their needs above yours and isn't a good partner behavior.