I need advice and positive opinions so please no bashing!!!!!

So I'm a stay at home mom and I have 2 kids. A 2y old and a 2 month old. My boyfriend/fiance works full time. We have this disagreement where he always expects me to cook dinner for him EVERY SINGLE NIGHT. Even on his days off. He told me I'm a bad housewife because I don't cook dinner for him every single night. I try my best to cook dinner for him and keep the house clean and take care of my kids. My 2y old is not biologically his. He mistreats her ALOT. She's very energetic for a girl and she bugs him alot which leads him to mistreat her. How can a woman mentally handle having to physically watch her own child getting mistreated every single day? But yet, he expects me to do all these things for him? He NEVER gives me money to buy things that we need. Not to mention, he always tells me that I have "2 kids" and he has "1 kid". He divides our family like this but yet, he expects me to cook dinner for him every single night?!?!! Am I being selfish for feeling this way???? Anyone going through this????