AIO for being hurt that my boyfriend wouldn't loan me $75 and compared it to me not having sex with him?

My boyfriend and I had a big argument today and my family is divided, so I genuinely want outside opinions.

I'm on disability with a limited fixed income. Before I became disabled, I made about $55k/year and was independent, so having to rely on anyone financially is difficult for me. My boyfriend makes close to six figures and has relatively low expenses, but we don't live together and our finances are separate.

He has helped/loaned me money before and I currently owe him money. (Currently down to 200) I pay him back $100 every month as agreed and haven't missed payments.

To be fair to him, I've also loaned money to family members when they were struggling despite my limited income. This bothers him because he feels I shouldn't help other people financially and then ask him for help when I'm short.

Here's what happened today:

On Fridays when we're at this hotel, I have to check out about 6 hours before he gets off work. He normally gives me around $50 so I can eat or do something while waiting-without expecting me to pay him back.

Last Friday I paid for everything myself. I mentioned afterward that I was surprised he hadn't offered me anything. He said I hadn't asked and told me, “Ask and you shall receive.”

So today I asked if he could loan me $75 and said I'd pay him back. He said no and offered $20 for McDonald's instead.

I was surprised because this is something he normally helps me with and he'd specifically told me to ask the previous week.

During the argument he said, “I wanted to bang this morning. Sometimes we don't get what we want in life.”

We'd had no sex that morning because I'd barely slept and was exhausted.

That comment really hurt me. I felt like he was comparing helping me financially with getting sex from me — like he didn't get what he wanted from me, so I wasn't getting what I wanted from him.

He later said an issue is that I loan money to family and then ask him for help, and told me, “I'm not a bank.”

I understand that I'm not entitled to his money, regardless of how much he earns. He's allowed to stop lending me money, and I understand why my helping family while needing help myself frustrates him.

But I feel like he could've simply told me that. Bringing up not getting sex felt completely unrelated and made the situation feel transactional.

We had a mostly silent drive home and I asked him to drop me at my apartment because I was so hurt.

I also feel like if i was in his shoes I would be more generous. But hes a bit of a tightwad. Which is why I've started paying for things when I can so he doesn't resent me.

AITA for getting this upset, considering I already owe him money and have loaned money to family?