Quote from Jackie in The Pill
Jackie: Donna, what am I gonna do? I'm in such trouble. Donna: Jackie, it's all right. We'll get through this. [they hug] What does Kelso say about all this? Jackie: No, no, no! I cannot tell Michael. It's way too embarrassing. Donna: Jackie! You had sex with him. Jackie: I know I did. But we didn't talk. Donna: You have to tell Kelso. If you don't, I will. Jackie: Thank you, Donna. Thank you! Oh, thank you! Donna: Jackie, I don't want to tell him. [After they hear a crashing sound in the cafe, Jackie opens the bathroom door and finds Kelso lying on the floor, being slapped by Fez] Jackie: I think he knows.