4x20 "The One with All the Wedding Dresses"

Ross asks Monica to pick up Emily's wedding dress and instead Monica tries the dress on and keeps it. Phoebe then comes to Monica's in a wedding dress. Because of Ross's proposal to Emily, Rachel, feeling slightly jealous, tries to talk Joshua into marriage. He doesn't accept, and Rachel becomes dejected. Later when Rachel puts on a wedding dress at Monica's (with Phoebe), the three of them hear a knock on the door thinking it's Chandler. When Rachel opens it, she finds out it's actually Joshua, who gets freaked out and leaves, thereby ending the relationship. Chandler takes Joey to a sleep clinic because he starts snoring all the time and meets a girl named Marjorie (Christina Moore) who talks in her sleep. She later is in bed with Chandler and screams really loudly and wakes up Joey.