ONTD

Emma Stone has a sex tape, and it's not with her Amazing Spider-Man co-star and boyfriend Andrew Garfield, a source tells RadarOnline.com exclusively.

While the Easy A actress is known more as a comedic sweetheart than a sultry sexpot, a close insider says Emma, 24, has a wild streak that has culminated itself in the form of a homemade sex romp on video.

"Emma Stone has a sex tape and that's a fact," the source told RadarOnline.com.

"She made it long before she started dating Andrew Garfield, and before she really became a household name. She was just young and probably thought nothing would ever come of it."

According to the insider, the tape has not been shopped around…yet.

"The tape remains in the hands of the person she made it with," the source said.

"But that doesn't mean there's any guarantee that it won't eventually hit the market. The higher Emma's star rises, the more valuable that tape becomes."

The source -- a close pal of the actress -- tells RadarOnline.com that Emma certainly isn't the type who would relish in releasing a sex tape and sees no benefit of making a name for herself by using it.

"Emma's really happy with her career and proud of where she is," the source said.

"There's no way she would organize the release of the tape; in fact, she would fight to stop it. She has no respect for women like Kim Kardashian and Paris Hilton who became famous because they released a sex tape."

Source