S2·E8 The Big Forbidden Fruit Episode

Phyllis announces that she has been seeing someone for the past month. She reluctantly agrees to bring her boyfriend, Earl, to the apartment to meet the girls. Earl is handsome, sweet and romantic, and leaves everyone (including Big Dee Dee) sufficiently impressed. Dee Dee sees Earl at a restaurant with another woman, and learns that it is his wife. Mona and Dee Dee try to break the news to Phyllis, and are stunned to discover that she already knew that Earl is married. She believes that he is separated and about to get a divorce. Mona and Dee Dee try to convince her to stop seeing him. Meanwhile, Spencer discovers that being attached has suddenly made him virtually irresistible to other women.