In this article titled "Mariana deceived Yolo with her brother! * They kissed on the mouth* - Yolo Aventuras," it is revealed that Mariana tricked Yolo by pretending to be someone else and kissing him on the mouth. The incident occurred during an adventure with Yolo in which Mariana's brother played a role in the deception. The article highlights the surprising and deceitful actions of Mariana and her brother, causing a misunderstanding between them and Yolo. The main idea of the article is to showcase the unexpected and shocking behavior of Mariana and her brother, leading to a dramatic situation during their adventure with Yolo.