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
Ross Geller and Chandler's wedding that Rachel is pregnant, with the father unknown to everyone but her. In the season 8 finale, Ross’s daughter with Rachel named Emma Geller-Green is born, as a result of their one night stand prior to Chandler and Monica’s wedding. In the final episode of the show, when Rachel is moving to Paris for her job with a new fashion brand, Ross tells her at the airport that he loves her and asks not to leave. Rachel initially doesn't heed his feelings, but when the plane is about to take off, she realizes that she loves him