I suppose it’s also possible he did something wrong - maybe crossed a line of decency.
But he’s cute, and he’s batman - and he was about to attend a premiere, so I’ll give him the benefit of the doubt.
Right now I feel bad for him.
He must be terribly embarrassed and furious.
He many have done something wrong. But I suspect that he was provoked by the selfishness of both of them. Some mom’s COUNT on that to manipulate their victim (Batman) into doing what she wants. Like give money to a whining sibling because in the mom’s eyes, the sister is the “better” child.
It is a no win situation for Batman. He loses either way, if this is an accurate scenario.