The plot's devastating turn hinges on the couple's desperate decision to escape to Zihuatanejo after Renata's parents forbid her from seeing Ulises and plan to send her to Canada. Renata's jealous and resentful younger sister, Mariana, overhears their plan and, in an act of betrayal, informs Renata's violent ex-boyfriend, Francisco.
The climax occurs at the bus station. As Ulises and Renata are about to board the bus to their new life, they are confronted by Francisco and Mariana. Francisco, enraged and brandishing a gun, tries to stop them. In the ensuing struggle, he fires the weapon. The shot is not intended for Renata, but she is hit in the crossfire. The hidden meaning that becomes clear is that the societal conflict, embodied by Francisco, is indiscriminate in its destruction. It is not just Ulises, the lower-class boy, who is in danger, but anyone who dares to cross the social divide.
Renata dies in Ulises's arms, but not before telling him she loves him one last time. This tragic ending solidifies the film's core message: in this rigidly stratified society, there is no escape. Their love, a beautiful and pure rebellion, is ultimately no match for the violent prejudice of their world. The final scene shows a heartbroken Ulises at Renata's grave, a haunting image that underscores the permanence of his loss and the victory of a divisive social order over love. The title's dual meaning, "Loving you hurts" and "Loving hurts you," is fully realized in this finale, showing that the pain extends to everyone touched by their forbidden romance.