Here's a bit of insight to what happens on the set of Glee - the kids get up to all sorts of sexual mischief in their trailers.
Glee creator Ryan Murphy has told Heat he has had to pull cast members aside and advise them to control their hormonal urges.
He said: "I've dated people I've worked with and, you know, when you work on a set for 18 hours a day I think it's natural. But I have a rule: don't do it in your trailer! They've broken that rule on many occasions. I'm like, 'I know you guys are young and hormonal, but don't do it in your trailer'."
Anyone got any tips on who's doing the serial fornicating? Place your bets here!