Lauren Conrad & Jason Wahler's Sex Tape

The Hills beauty made a sex tape with former boyfriend, Jason Wahler.

"Jason is trying to sell the video before he goes to jail," a source close to Wahler tells us. "LC will lose her mind when she finds out!"

"Lauren tried to break into Jason's apartment to get the tape," says a mutual friend of the pair. "She was practically stalking him and calling non-stop until he finally agreed to give her the video."

"They edit around the show to make Lauren look like a goodie two shoes on The Hills, but she's hardly a saint," says an insider on the show. "LC is gonna pop more

Adderall (a pharmaceutical stimulant amphetamine used to treat attention-deficit disorder/attention-deficit hyperactivity disorder and narcolepsy) then she usually does when she finds out that news of the sex tape was made public."

Says a friend of the reality TV star, "She's got overly large girly bits. Everyone knows."