AceShowbiz -

Move over people, Cash Warren is taking his very big steps forward. The film producer threatened to sue The National Enquirer over report he has cheated on actress girlfriend Jessica Alba with Russian model Vera Mishina.

Entertainment Website Hollywood.com reported that Mishina already passed a "rigorous" lie detector test before then telling the National Enquirer her story of getting up close and personal with Warren.

"On the night he picked me up and got me into his bed, he was acting like the world's biggest single man," the beauty was quoted by the publication as saying. "But I found out that only hours after being with me, he was on a plane back to L.A., where he was then photographed having dinner with her (Alba) and acting affectionate."

Mishina went on saying, "If he had told me they had gotten back together there's no way I would have allowed him to sleep with me. I now feel like all he wanted was a one-night stand. I feel used. Cash wasn't very honest to lead me along like he did. Jessica may want to rethink taking him back. He cheated on her the minute he was away from her."

One of the National Enquirer reporters is said to have already called Warren to confirm the cheating report before they made it public. But, the man simply said, "I advise you not to print that if you don't wanna get sued. No comment." He reportedly has hired a lawyer now that the scandal has become talk of the town.