Weirdest Friends plot finally explained
Friends fans have long been confused by the season 8 decision to have Joey and Rachel hook up.
Now the show's bosses have admitted they knew the romance would be "controversial" and loved that it was "wrong", reports The Sun.
The pair began a relationship in season 8 after several years of Joey flirting with Rachel and after she realised she was pregnant with Ross's baby.
David Crane, the creator of the hit sitcom, has now said: "The Joey/Rachel thing I know is controversial.
"I love it. I love it because it's wrong - and we knew going in: this is wrong. And that happens in life."
He added: "There is the relationship that shouldn't be. Even though you love someone, that's not who you're going to be with."
But Crane added the romance might have been short-lived and out of character but it actually allowed Matt LeBlanc, who played Joey, to reveal "colours he hadn't gotten to play yet".
"Joey and Rachel, we always knew (it would end)," he told the Radio Times.
"She was pregnant with Ross's baby. We always know this was like … that this was doomed, but in a hopefully really interesting, moving and compelling way."
Rachel and Ross eventually ended up together after Rachel gave birth to their daughter Emma, and in the pilot episode of spin-off show Joey, it was revealed that they had married.
The hit US sitcom ran from 1994 until 2004 and is still one of the biggest comedies of all time thanks to the six lead characters and their relationships.
While Ross and Rachel's on-off relationship ran across the 10 seasons, viewers got a shock at the end of season 4 when Monica and Chandler hooked up in London.
The couple eventually went on to marry and have children together, and many fans also wondered if Phoebe and Joey would also get together at some point, but they never did.
The pair shared a "perfect kiss" in one episode, while Phoebe also kissed Joey as she pretended to be her twin sister in another scene.
However, Crane, who co-wrote the sitcom with Marta Kauffman, explained why Phoebe and Joey had to remain just friends.
He said: "It all would have been too tidy and too complete."
This article originally appeared on The Sun and was reproduced with permission.