There was a big party happening in the neighborhood, a place where all the popular kids would be. Your little sister decided to be daring and try to talk to her crush. Since you got this message half an hour after she left, it probably didn't go as plan
Your childhood bully always knows how to humiliate you, and you've always been too much of a pussy to stop him. You even let him impregnate your first gf because you were too scared of him.