Ashton Kutcher’s alleged mistress, Brittney Jones, tells Star magazine that Ashton isn’t cheating on Demi Moore because you can’t cheat in an open marriage. Brittney claims Ashton and Demi have threesomes all the time and the only reason Demi is mad is because she didn’t get to join in. Also, Brittney might actually be 16-year-old kid with a subscription to Hustler.

“Ashton said he and Demi have an open relationship and have threesomes often,” she said. “I didn’t feel at all like he had just cheated on his wife. It felt normal and OK.”

“He said they share women, but he isn’t supposed to go off and sleep with women on his own,” she told Star. “He said Demi had to be there and that Demi likes to pick the girls out.”

While Brittney thought she could be Ashton’s girlfriend on the side, he quickly squashed that possibility. “He explained that he and Demi had a deal where they had to share lovers. He felt bad that he had been with me and didn’t share,” she claimed. [Hollywood Life]

If this is true, Demi sounds pretty cool. Ashton is going to cheat on her regardless so why not join in. No one else minds either because Demi is still hot. Her plastic surgery has kept her in great condition like a comic book in a Mylar bag.