Girl 1 suspects that her boyfriend and her friend Girl 2 hooked up at a party over the weekend after Girl 2 acts strangely about what happened. During class, Girl 1 watches her boyfriend and Girl 2 for signs they are together but doesn't notice anything. Later, Girl 1 follows her boyfriend and his friends and sees him attack another student. They share a look, realizing their relationship is over. Girl 1 then sees Girl 2 making out with a different boy, realizing her original suspicions were mistaken.