she wants one night stand after finding out she was being cheated on

FMC was at the bar, drinking, when one of her friends (either her best friend or maybe her best friend's brother—someone she already knew well) came over. In the middle of their conversation, she confessed that she wanted a one-night stand, just to forget her ex. He responded firmly, saying something like, "You're not leaving with some random guy." But she insisted, and after a moment, he volunteered to go with her.
He was the same vibes of Between desire and denial by Shain Rose