Would ya be annoyed?

Last night my friend invited 4 of us over to drink & play drinking games, she’s been talking about it for a few days how good the night was going to be lmao. Anyway, she kept bugging us asking when we’re coming & we showed up at 9. By 11:30 she messages me on snap asking if we could leave because she wants to have sex with a guy that was with us lol. I felt that it was rude. Like I cancelled plans to hang out with her & her friends. 😅 Even my boyfriend thought it was rude, we’ve never done that to any of our friends😂 Literally just would’ve went to the washroom for a quickie 😜