What is what episode does iris find out barry is the flash?

In the popular superhero TV series "The Flash," Iris West discovers that Barry Allen is the Flash in season 1, episode 15 titled "Out of Time." In this episode, Barry reveals his secret identity to Iris in order to save her life as the villain Weather Wizard threatens to harm her.

This revelation deepens their relationship and brings them closer together as Iris becomes an integral part of Team Flash. Iris's knowledge about Barry's secret identity adds a new dynamic to their romance and her involvement in Barry's superhero endeavors.