Kim Kardashian insists she did not have sleptwith another man. The newly engaged starlet  is threatening legal action over this week’s In Touch cover story, which claims she sent “kinky” messages to New England Patriots player Bret Lockett behind the back of her NBA fiancé, Kris Humphries

“I knew this was a game to her, and this is what she does,” the tab quotes Lockett as saying. “She pursued me.”

In a letter to In Touch obtained by TMZ, Kardashian’s attorney dismisses the “caught cheating” claims as “at a minimum, damaging, defamatory, and an invasion of her privacy.”

A fuming Kim hit back at the accusations on her blog, ranting, “I knew when I got engaged that rumors and false stories were going to start, but this is RIDICULOUS!!!! In Touch magazine is claiming that I had a five-month secret relationship with this guy … a guy I’ve never met, spoken to, texted, called or even heard of!”

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