According to the search results, Devi loses her virginity in the first episode of season 4 of Never Have I Ever, titled "...lost my virginity". The episode opens with John McEnroe narrating, "This is the house that...," and then the title of the episode appears on the screen. It is revealed that Devi had sex with Ben, as they are shown lying in bed together. Later in the season, Devi also hooks up with Ethan.