Guy on Reddit asks if he's the asshole, receives overwhelming confirmation of asshole status

Here’s a hot tip: If you find yourself with the nagging urge to ask “Am I the asshole?” in any given situation, nine times out of 10, you will be correct. One Reddit user learned this lesson the hard way, when he took to r/AmITheAsshole to ask that very question. The user says that he’s a 31-year-old single dude who lives alone and has exchanged polite hellos in passing with a female neighbor around his same age. Despite the fact that this already sounds like it’s going nowhere good, he continues: “So I don’t know how to cook, and due to losing one of my part time gigs, I don’t have as much money for takeout anymore. I’m getting really sick of eating cheap fast food or box mac and cheese. I’m gaining weight and I never feel great.” A relatable problem for most people. But where most people would maybe Google some cheap, nutritious recipes and watch YouTube cooking tutorials, this guy has an idea.
His lady-neighbor, whom he refers to as “Katie,” seems to be a very good cook. He can smell her tasty meals from his apartment down the hall. How does he know it’s Katie? “It isn’t the other person at our end of our hall cause it’s a single old man,” he says, as if only young women of able body (and, presumably, within child-birthing hip-range) can cook. Let this enterprising, all-American genius take it from here:
So I got the idea that I’d offer to give her some money each week to cook a little extra and bring it over to me (or I can pick it up from her!) at night. She’s cooking anyway and then I’d have varied presumably delicious food.
I asked her the next time I saw her and she looked surprised and said she couldn’t because she was too busy (which didn’t make sense cause she cooks almost every day but okay). The next time I saw her a few days later, I asked her if she was sure and upped the amount I was offering, and she said she was sure and that it was rude to ask me, and that she isn’t a housekeeper for hire and I should get a housekeeper if that’s what I want. She also called me ‘a stranger’ even though we have talked in the halls before.