Bloke and me dont live together, have no shared finances, both work (well I am furloughed but getting 80%).
Two issues sort of conflated into one at the weekend and its been bugging me.
I have lost a lot of weight over the last two years. A combination of the divorce diet and working 12 hour days on my feet all the time. I dont have much of an appetite so I generally only eat once a day and make sure that that one meal is healthy. I dont deny myself treats if I want them but I tend to go for savoury stuff rather than sweet, so a bag of crisps rather than cake or chocolate. I am 5' 6" and a size 10 but not a skinny 10 at all, I could easily lose more weight without looking skinny, I dont want to but I am just trying to show that I am not unhealthily thin. I do however look vastly different to before when I was verging on a size 20, and he knew me then. So now he is obsessed with my eating. Have I eaten? What? When? blah blah, he messaging at least twice a day about it. When I am round there (not atm obvs, pre apocalypse) he keeps offering me food. He isnt fat or particularly health obsessed either, just normal. But he says he is worried I will end up with an eating disorder.
Then last week I ordered myself something I needed. It was an item of clothing but something I needed as the previous one had literally fallen apart. I spent £150 on it because a) it is the best quality of this item I could afford and b) it was really pretty 
He was shocked I would spend so much on it and kept going on about it.
In the end I lost my rag (not shouty, just in a FFS!!!!! way) and said "Look, its my money, I earned it, I can afford it, I am not spending money on anything other than bills and food at the moment so I can justify it. Mind your own business...... AND!!!" I admit to a little rant here "While I'm thinking about it, my food intake is none of your business either! I eat well, I have maintained my weight since before Xmas so I havent lost anymore, I am fine and healthy and my BMI is 23, so normal."
He then started saying he was worried I would get anorexia and run out of money at which point I said "If I do then I promise you will be the first to know so until that day just shut the fuck up about it, PLEASE!!!"
We are ok, we didnt fall out, and he hasnt mentioned it since but I know he thinks IABU to not get that he is worried and therefore his constant mentioning of it is because he cares. It was driving me fucking potty!
WIBU?!