The adult film star who claimed he had three-way sex with Kim Kardashian in a cover story for Star magazine has gone on camera to say he has "nothing to lie about."

"What I find very interesting about the sex experience with Kim, was people are denying this occurred," veteran porn actor Julian St. Jox told Radar Online in a video interview. "It did occur -- it was a long time ago, it was before she was a celebrity. I didn't think a big deal of it. I didn't mean to destroy anyone's life, that was not my intention ... [a reporter] called and asked me a question, I told the truth."

St. Jox said he had a ménage a' trois with a much younger Kardashian in 2001 at a swingers party when she was 20 years old. The actor said he and the reality star had the one-night fling with his date for the night, fellow porn star Emily Ann, at the Wyndham Hotel in Culver City, Calif.

St. Jox claimed the heated session occurred at "an adult lifestyle party where couples come to meet, and they meet people who have like-minded interests," and "the girls got involved with each other, and then [he] got involved with Kim."

The actor described the chain of events in detail, saying, "I approached Kim and her date approached: I had sex with Kim, her date had sex with Emily Ann...pretty much a general swingers' swap."

Kardashian, 31, at the time was married to her first husband, music producer Damon Thomas. St.Jox did not mention if Thomas was with her that night.

The star of movies like "Doin' Da Nasty" and "All Day Long" said he remembers the reality star very well because "I've been with a few women in my lifetime and she stood out for a few years. She was a good l**, as you'd say." 

St. Jox said that after Kardashian "became very famous, all I could say was, 'Lucky me, I got to have sex with someone famous.' "

Watch the video of St.Jox discussing his three-way romp with Kardashian

Radar Online posted excerpts from the magazine's interview as well as the cover, featuring Kardashian with the headline "Kim, Caught With A Man- And A Woman! Her Group Sex-Partner Tell All!" 

Both Kardashian and her rep have not responded to the article.