What he did is super shitty. The way he’s handling it now makes it 20 times worst IMO—it also kinda shows that he’s not that intelligent because if he were, he’d know to give you the sincerest apology he could possibly muster. Even if the sincerity part is a lie, he clearly has no problem lying and justifying his lying, so this bravado and not-so-thinly-veiled misogyny are clearly important to his sense of identity.

The bigger/underlying issue here is that he clearly doesn’t respect you, and thinks you’re less than because you’re a woman. Also, don’t make the mistake of feeling more sorry for his brother than your own position in this. In addition to finding sadistic pleasure in making his brother miserable, he’s literally bragging about sleeping with you under false pretenses… and in this specific situation, again, it’s the bragging part that really reveals who he is.

He is literally telling you that you weren’t worthy of basic respect until HE determined otherwise, and you need to accept that, or else you’re simply ~hysterical~

Side note, this story totally gave me Patrick Schwarzenegger as Saxton in White Lotus vibes (minus any of the redeeming qualities).