Monica Geller would most likely be Chandler. Crane and Kauffman had never intended to pair off Monica and Chandler with each other, and only decided to expand upon the idea of a relationship between the two friends upon realizing that viewers had "fallen in love" with the notion of Monica and Chandler as a couple. According to Robert Bianco of "USA Today", "Their affair came out of the blue and was supposed to quickly return there — but something in the relationship clicked with viewers." The idea of Monica and Chandler's romantic arc originally surfaced much earlier in the series from writers
Monica Geller "can't simply rest on this one [Ross and Rachel] relationship", while believing that Monica and Chandler's would ultimately provide a fun opportunity for the writers to explore brand new storylines. Silveri and Goldberg-Meehan deliberately intended to keep Monica and Chandler's union "low-key" in order to further differentiate it from Ross and Rachel's, which had been very public. In order to get an idea how audiences would react to Monica and Chandler hooking up at Ross and Emily's wedding in London, the scene in which a clearly nude Monica suddenly emerges from under the sheets of Chandler's hotel bed was filmed