The One Where Chandler Gets Caught (2004)

Chandler and Monica have decided they want to raise their offspring in a suburban house and even find a perfect one in Westchester. Rachel and Phoebe see Chandler enter a car with his realtor, Nancy, and think he's cheating on Monica. After that misunderstanding is cleared, the other Friends are shocked the couple wants to leave Manhattan, and everybody starts reminiscing about living in New York as a gang, until Nancy calls about their bid on the house.