I don’t think there was probably anything wrong…..it sounds as if the date hadn’t gone that well anyway…..or OP was it going well as far a you were concerned before that.
So, if date has been mediocre/poor especially, when the man is given the bill, I can see how they might feel a bit irritated if there’s any suggestion they will be paying it all. It could well be that in the past women on dates have assumed that. It could be that a woman (OP) not having purse out indicates a possible suggestion that the man will pay.
So, his phrasing wasn’t great. But it’s unlikely such phrasing would have been used if this had been a great date and things had been going really well between them. And even if it hadn’t been great, this probably wouldn’t have been used if OP already had her purse out. But if neither of these was the case, regardless of wealth, I can see why someone who has many dates and always feels expected to pay, might get a bit weary and offhand when bills come.
On one level, men can’t win. Women say they want to split the bill. However, many women (including those on this thread) do expect the man to pay or at least to offer. That expectation is there in lots of people and men know it. And lots of women (like OP) say they expected to pay, but didn’t make it clear before ordering or before the bill arrived….only after the bill arrived and after the man had had to say something first.
So actually I think Op could have helped the situation. She could have said upfront that she’d like to split or at the point the bill was asked for. Instead, it seems like a bit of a test was actually going on - would he offer to pay or not. It seems this was the point when OP decided he was a twat and nothing particularly beforehand.
Fine if she doesn’t want to see him again. No-one has to go on a second date, but I think that this thing about splitting bills, when to discuss it, it feeling awkward etc and actually the often unspoken expectation men will pay or at least offer enthusiastically (which gives women a chance to be paid for) is there….and a bit annoying when women SAY they always want to split, but don’t actually demonstrate this in a timely fashion to be meaningful.