No one is going to Mariana's party

The gang goes to a party. Marifer gets drunk and flirts with Lalo, a skateboarder. Alex avoids his snobbish ex-friends. Daniela sees Diego with his girlfriend, and Tenoch realizes there's something between them. Only Memo has fun drinking. Susana, Alex's sister, kisses Tenoch. Everything ends with Marifer fighting with Alex, revealing to everyone that he likes Rafa. Alex feels abashed.