Scott Thorson, Liberace's former boyfriend, claims he had an affair with Michael Jackson.

In an interview with Entertainment Tonight, Thorson claimed he and Jackson shared an intimate relationship in the early 80's and traveled together extensively.

When interviewer Christina McLarty asked if the relationship had ever turned sexual, Thorson, 54, began by saying, “Michael and I had a relationship that … yes ...”

“Would cross the boundaries of friends?” McLarty interrupted.

“Yes, would cross the boundaries and that's about all I'm comfortable in saying. But yes.”

“We were both young, we both liked each other, we had a lot of fun. We went all over Europe together. Michael was my best friend, I was his best friend,” he added.

Thorson detailed his life with Liberace in his 1998 book Behind the Candelabra: My Life With Liberace, which is being made into a movie with Michael Douglas playing Liberace and Matt Damon as Thorson.

Thorson also stated that a drug addiction was to blame for the demise of his relationship with Liberace, who died in 1987 of complications from AIDS. (Watch the entire interview at Entertainment Tonight.)