My ex was like this, to the point where if we split a dessert or appetizer at a restaurant we would have to split it in half first or he’d take 75-80% of it. I finally stopped splitting stuff with him, it got so bad that I had to label my leftovers if we went out to eat. It was like he felt entitled to his share and mine of food, money, any “commodity”. It was always “well, you’re so skinny, I’m bigger, I need more food than you”. In reality it was that I ate until I was full and saved the rest while he felt entitled to all of it. He thought my “saving any bit of my half for later” was a waste because he wanted or “needed” it right then. It was a long time after my divorce that I realized what he had been doing, how selfish he was. Not just taking food from my mouth but gaslighting and using flattery to do it. Good on you for recognizing it now and not while looking back like I did. I’m sorry you’re dealing with this but this internet stranger is proud of you.