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 grew closer to each other though the competition between them was still visible as seen in the season three episode, "The One with the Football". Ross often comes into conflict with his close friend, Phoebe Buffay. His rationality and Phoebe's eccentricity lead to conflict over evolution, gravity, and whether Phoebe's mother was reincarnated as a cat. It is also revealed that Phoebe once mugged Ross (stealing a copy of the comic book "Science Boy" that Geller had created) when they were teenagers. The two are roommates for a few weeks when a fire forces Phoebe to move into Chandler Bing