From my experience disagreeing on what is reasonable does not equate to being out of their league. Plenty of people have different standards for a prospective partner vs themselves.
Discussion
There's a span, but if he's balking at paying for coffee or some nice pasta, he's probably in too deep.

I was meeting someone at a coffee shop once. He was running late and I was thirsty, so I got a drink. He called me out for buying my own and said he thought that signaled I wasn’t that interested.
I keep thinking about stuff like this and wanting to go thank my current partner.
Well, that's more asynchronous.
Coffee shop dude? Or that I want to thank my current partner for being so lovely just the way he is?
The coffee shop thing. You weren't ordering together. He wasn't even there.
He complains that you're not showing enough interest? And this after he was late? You might get the idea that HE lacked interest! To be honest, I find it hard to deal with tardiness 🤭 I probably would have left with my takeaway coffee by now
