FRIENDS star David Schwimmer has hinted that the cast of the hit nineties show broke a “no sex” clause in their recording contracts.

Five of the original line-up — Schwimmer, Jennifer Aniston, Courteney Cox, Matt Le Blanc, Lisa Kudrow — were star guests at television show celebrating the cult sitcom’s director, James Burrows, reported The Sun.

Matthew Perry, who played Chandler Bing, was missing due to being in a play in London’s West End.

Host Andy Cohen delved into rumoured contracts which meant they weren’t allowed to sleep with each other.

Kudrow, who played ditzy Phoebe during the run of 236 episodes, denied they existed.

Though Schwimmer, famed for his portrayal of loveable yet unlucky-in-love Ross, said: “Well, that was broken.”

Fans were thrilled to see the cast (almost) all back together, and a teary Aniston, who played bubbly blonde Rachel Green, led the tributes during the star-studded Must See TV: An All-Star Tribute to James Burrows shown on NBC.

The newlywed gushed with praise for her ex boss and said the actors in the American TV show, which ran for 10 series, owed their success to him because he taught them “everything we know” about comedy.

Looking gorgeous in a chic jumpsuit during the two-hour special she said: “We would do anything for Jim Burrows because he really gave us the opportunity of a lifetime.

“We experienced friendship, family, heartbreak, babies, everything, together. And we also had a wonderful experience with the world loving us as well.”

The 47-year-old was seen dabbing her eyes as the 75-year-old, also responsible for shows Will and Grace and Cheers, made a speech to thank his supporters and those he had worked with.

Aniston then joined Cohen on the stage, along with her co-stars. They were one man short of the much-loved full line-up with funnyman Perry in London for his show The End of Longing.

Cohen delved into the relationship between them which saw the six-piece become genuine friends.

Aniston said: “At the beginning it was not a hard thing, we really just wanted to hang out with each other, it was not ‘Uggh we have to do this’. We just really fell in love and adored each other instantly and would hang out at each others houses and watch the show together.”

Le Blanc, who played Joey Tribbiani, added they had been urged to “get to know one another, and be kind to one another” by the director.

Fans finally found out some of the star’s favourite scenes, too.

Cox, known as tidiness-obsessed Monica, said her most memorable moment came in The One With The Blackout where her on-screen brother Ross was on a balcony with a cat clambering on his back.

Though Aniston said it was flashbacks to fat Monica and Rachel pre-nose job, not to mention Ross with an afro, which made her giggle most.

This story originally appeared in The Sun.