Well I'm not on board with the passive aggressive stuff.
Again though, the problem is one of romantic consent. It's no where near as serious as violating sexual consent, but people have a right to consent or not consent to participate in romantic settings. For example, it would be a violation of romantic consent if I told you you were attending a job interview and you show up and it's actually a date. That would be a rude and creepy thing to do. People have a right to know what kind of romantic situations they are getting into in advance.
She violated his romantic consent by turning a private date into a gathering. And the basic rules of consent apply.
Maybe she wanted someone to check the vibes with her first? Maybe she just thought it would be fun and didn’t know that “you aren’t supposed to do that”?
Imagine someone said, "I know she didn't want it, but I just thought it would fun to have sex with her without her consent! I certainly had fun! I didn't know you weren't supposed to do that teehee! # so random!"
Violation of romantic consent is nowhere as serious as rape. But it is still a violation. It's not a felony. But it is extremely rude and disrespectful. Violating romantic consent doesn't make you a criminal, but it does make you a bad person.